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How to calculate mass of Earth

Calculate the Mass of the Earth Science project

The mass of the Earth may be determined using Newton's law of gravitation. It is given as the force (F), which is equal to the Gravitational constant multiplied by the mass of the planet and the mass of the object, divided by the square of the radius of the planet To calculate the mass of the Earth, all one needs to do is divide by G. There's a catch, though. If the product is G M E is known to a high degree of accuracy (and it is), dividing by G will lose a lot of accuracy because the gravitational constant G is only known to four decimal places of accuracy Divide the object's weight by the acceleration of gravity to find the mass. You'll need to convert the weight units to Newtons. For example, 1 kg = 9.807 N. If you're measuring the mass of an object on Earth, divide the weight in Newtons by the acceleration of gravity on Earth (9.8 meters/second2) to get mass Force is mass times acceleration with the acceleration being supplied by gravity. If we can solve for Force we can then determine the mass of the atmosphere. Pressure = Force / Area Pressure = 101,325 Pascals Area = Area of Earth The earth is a near sphere. A sphere has an area of 4*PI*radius^2. Earth has a radius of 6,371 km = 6,371,000 meters CALCULATING THE MASS OF THE EARTH 1. F = GmM/r2= ma, where F is the gravitational force, G is the gravitational constant, M is the mass of the Earth, r is the radius of the Earth, and m is the mass of another object (near the surface of the Earth). 2

Earth mass (ME or M⊕, where ⊕ is the standard astronomical symbol for planet Earth) is the unit of mass equal to that of Earth. The current best estimate for Earth mass is M⊕ = 5.9722 × 1024 kg, with a standard uncertainty of 6 × 1020 kg (relative uncertainty 10 −4). The recommended value in 1976 was (5.9742 ± 0.0036) × 1024 kg To evaluate the mass of a planet, such as Earth, we can use Newton's Law of Universal Gravitation. Using this, we know that the force of attraction between two objects is proportional to the product of their masses divided by the square of the distance between their centers of mass

Likewise, if we know the weight of an object, we can work backward to figure out its mass. Say an object weighs 160 pounds of Earth. we can calculate the mass of the object as: 180lbs(1N/.22lbs)=818.18N. 818.18N=m(9.81m/s 2) m=818.18N/(9.81m/s 2)≈83.4 kg. So a 180 lb body on Earth has a mass of about 84.3 kg. Mass-Energy Equivalenc Knowing this value of g for Earth's surface, along with the constant G and the 6,731-kilometer distance to Earth's center, you can then calculate Earth's mass to be 6 x 10 24 kilograms. (You also.. If you know how far you have traveled in miles across the surface of the earth, you know the relationship between angular and linear distance, and dividing miles by angle (measured in radians) will give you the Earth's radius in miles. Once you know F grav /m, G, and R, you can rearrange equation (1): M = (R 2)*F grav / G* What is the mass of our planet? Let's find out!Share and leave a thumbs up if you enjoyed watching the video :)Don't forget to subscribe, your suggestions ar..

How to calculate the mass of the Earth? - Cosmic Escape

  1. Oh, you could repeat this exact same calculation but use a known mass and solve for the mass of Earth. This gives a value of about 5.97 x 10 24 kilograms. But why stop there
  2. Weight is defined as the force exerted on a body by gravity - and the formula used is W = mg where W is the weight, m the mass of the object, and g is the gravitational acceleration. Therefore, the weight of the Earth can only be known in some o..
  3. 3. Calculate F centripetal, with Newton's Second Law: Units on your answer will be in kilonewtons (KN). 1 KN = 224.8 lbs. 4. Calculate the mass of the Earth m Earth from Newton's Law of Universal Gravitation, after rearrangement for m Earth: Remember, d is the distance between the center of the Earth and the satellite, calculated earlier.
  4. If you know the circumference of the Earth, you know its radius from which you can get calculate its volume. Then with an estimate of average density, you can obtain its mass. Begin with an educated guess: an average of the densities of the common rock granite and iron gives a value (5250 kg/m3, almost 95% accurate, by fluke)
  5. there is a planet with a mass of M,; a moon orbiting the planet with a mass of Mo and it takes time T to complete one orbit around the planet,; the distance between the moon and the planet is r.; Now we will calculate the mass 'M' of the planet.. According to Newton's law of universal gravitation, the planet would act as a gravitational force (F g) to its orbiting.
  6. This procedure was actually used to calculate the mass of the earth and it is used to calculate, well, the mass of any orbited body. In fact, we did not know the mass of the planet Mercury until we put a satellite around it. What is that magic equation? Well, there are actually several

How do you calculate the mass of planet Earth and its density

1.165 X 10^19 pounds The average atmospheric pressure is 14.7 lb/sq. inch. Earth's radius = 3964 miles = 2.5116 X 10^8, nearly. The surface area of the Earth = 4 pi (radius)^2 =7.927 X 10^17 sq. inch. Mass of the atmosphere =(7.927 X 10^17 sq. inch) X (14.7 lb/sq. sq. inch) =1.165 X 10^19 pound The mass of an object never changes but the weight will vary depending on the gravitational pull acting on it. Use this calculator to determine the weight of an object from its mass and the acceleration due to gravity at a particular geographical location or any other source of gravitational attraction In early nineteenth century scientists used Newton's second law and Newton's law of universal gravitation to measure mass of the Earth. These equations are F = ma and F=(GmM)/(r 2) respectively(m=mass of the object, a=acceleration, G=Gravitational Constant, M=mass of the Earth, r=Radius of the earth).If we substitute g i.e. acceleration due to gravity for the 'a' acceleration term and combine. You dont know the mass of earth, but you know the force earth apply to you. This is F=mg, where g is 9.8 m/seg^2 Buut this is equal to the gravitation force, F=GmM/r^2. G is the gravitation constant, M the mass of earth, m your mass and r the radio of earth. Cavendish was who messure the earth mass

  1. To calculate the mass of the atmosphere above the earth's surface you do not need to know the density variation of air vertically nor the extent of the atmosphere above the earth. All one needs to know is the pressure at sea level and the value of acceleration due to gravity (g) at sea level (and an assumption that this does not vary over the.
  2. The study of the size and shape of the earth is known as geodesy and has been practiced for centuries. Contrary to common misconceptions, many historical mathematicians and scientists were aware that Earth was spherical. Technically Earth's shape is called the geoid, an ellipsoidal shape. Possibly starting with Eratosthenes, over 2,200 years ago, mathematicians have attempted to calculate.
  3. 1. Measure the mass of the mass hanging at the end of the string. 2. Calculate the weight of the hanging mass. The weight is equal to the mass times the acceleration from gravity. F g = Mg 3. Measure the distance between the tube and rubber stopper (r). 4. Mark a spot on the string about 1 inch below the tube. 5
  4. Earth mass (M E or M ⊕, where ⊕ is the standard astronomical symbol for planet Earth) is the unit of mass equal to that of Earth. The current best estimate for Earth mass is M ⊕ = 5.9722 × 10 24 kg, with a standard uncertainty of 6 × 10 20 kg (relative uncertainty 10 −4). The recommended value in 1976 was (5.9742 ± 0.0036) × 10 24 kg. It is equivalent to an average density of 5515.
  5. ing the Mass and Density of the Earth: The goal of this study is to learn how the famous physicist, Sir Isaac Newton, computed the mass of the Earth, and then use this to compute its density. Basic Concepts: * Any object in the Universe attracts any other object. * The force that moves objects toward each other is called gravity
  6. e mass in relation to the mass of s..
  7. ed by dropping an object, any object, and measuring its acceleration toward the Earth. You do not have to know the mass of the Earth to measure an object's acceleration toward the.

How to calculate mass of the earth Physics

R, the radius of the Earth (the center of mass of a sphere, such as the Earth, is just its geometric center, so R is also the distance between the objects' center of mass) has been known reasonably ever since Eratosthenes of Cyrene did his experiments with the sunlight going down the well at Syene but not at Alexandria at the summer solstice The force of gravity is measured in meters per second squared (m/s2). The gravity of the earth is represented by the 'g' letter in the equation. The earth's gravity is 9.8 m/s2. It's a constant. Calculating Mass from Force and Weight. So, let me repeat the equation clearly: W = m x g. W = Weight (Newton or kg) m = Mass (kg) g = Gravity.

Calculate the kinetic energy of rotation of the earth about its axis, and compare it with the kinetic energy of the orbital motion of the earth's centre of mass about the sun. Assume the earth to be a homogeneous sphere of mass 6.0*10^24kg and radius 6.4*10^6m. The radius of the earth's orbit is 1.5*10^11m CALCULATING THE MASS AND DENSITY OF EARTH Kepler's Third Law (Newton's Form): P2 a3 4!2 MG The period of the moon's orbit is 27.32 days, or 2,361,000 seconds (roughly). The semi-major axis (a) is 384,400,000 m.G, the gravitational constant, is presently calculated to be 6.673·10-11 m3kg-1s-2.Doing the math The large balls each have mass equal to that of 10.66 spheres of water with diameter 1 foot each, which one can check easily. Cavendish knew the mean diameter of the Earth to be 41800000 feet as the method for calculating this value via trigonometry had been known since Eratosthenes In the usual units, the mass of something on earth has the same numerical value as its weight on earth. Anything which weighs 150 lbs. on earth will have a mass of 150 lbs. If you ever take a physics course they will try to set up separate units for mass and weight, but it can be confusing The atmoshere does not really have a volume since you need to know at what altitude it ends, The mass of the atmosphere is easier to calculate since it is set by the atmospheric pressure at the.

Using Math To Calculate Your Weight In Outer Space. Introduction Newton's Law of Universal Gravitation states: If F is the force due to gravity, G the Universal Gravitational Constant (6.67x10-11 N. m 2 /kg 2), m 1 and m 2 are masses in kg, and r the distance between two objects in meters, then. The . The Weight of an Object On The Face Of The Earth find the mass of earth to radius of its orbit is 4×10^5 km. Find the mass of earth . of the earth ,If R is the radius of the earth , then find the. The first measurements were presumably from ancient times. The ancient Greeks, understanding that Earth is a sphere, were able to estimate its radius. The method was to see how shadows in different cities behaved differently. from Wikipedia (Fi..

Even though we are supposed to use the sum of the masses of both the Earth and the satellite, in this case, the satellite's mass is roughly a trillion trillion times less than the Earth and can be considered to be insignificant. Click on the 'RADIUS' button, enter the time and mass, click on 'CALCULATE' and the answer is 4.2244 x10 7 meters or 42,244 kilometers or 26,249 miles Mars has only 11% the mass of the Earth. Because of its high mass for its size, Earth actually has the highest density of all the planets in the Solar System. The density of Earth is 5.52 grams. The Earth's mass is 5,970,000,000,000,000,000,000,000 kilograms. That is a lot of mass! Here is a shorter way of writing that big number: 5.97 x 10 24 kg. That little 24 is called an exponent. An exponent of a number is how many times to use that number as a multiplier. So, in other words

What Equipment Is Used to Measure Mass?

Thus, an object with a mass of one kilogram weights approximately 9.8 newtons (N) on the Earth, and 1.63 N on the Moon. The Moon's mass is 7.3477×10²² kg Gravitational Mass The mass of object 2 (m2), in the case the mass of earth's moon in kilograms (Kg). The average distance from the center of the earth to the center of the moon in meters (m). Now that you have acquired the proper information for the equation, calculate the gravitational force between the earth and moon

Mass of the Earth - The Physics Factboo

How to calculate the value of g at surface of Earth? (5.97x10^24 kg, 6378 km) , Moon ? (7.35x1022 kg, 1738 km) and Mars? (0.642x1024 kg, 3396 km To find the weight on the moon, we divide the weight on earth by the earth's force of gravity, which is 9.81m/s 2. This calculates the mass of the object. Once we have the object's mass, we can find the weight by multiplying it by the gravitational force, which it is subject to The common point, called the center of mass, is 7.3 times closer to Pluto, so Pluto is 7.3 times more massive than Charon. Before the discovery of Charon in 1978, estimates for Pluto's mass ranged from 10% the Earth's mass to much greater than the Earth's mass

Calculating Mass . Once all that information is known, astronomers next do some calculations to determine the masses of the stars. They can use the equation V orbit = SQRT(GM/R) where SQRT is square root a, G is gravity, M is mass, and R is the radius of the object. It's a matter of algebra to tease out the mass by rearranging the equation to. The surface area of the earth is 7.906 x 10^17 square inches. Multiplying this by 14.7 pounds per square inch yields 1.162 x 10^19 pounds. this is equal to 5.264 x 10^18 kilograms for the total mass of the earth's atmosphere. for comparison, the wikipedia value is given as 5.15 x 10^18 kilograms Every object in the universe with mass attracts every other object with mass. The amount of attraction depends on the size of the masses and how far apart they are. For everyday-sized objects, this gravitational pull is vanishingly small, but the pull between a very large object, like the Earth, and another object, like you, can be easily measured The force of gravity on the moon for example, is approximately one-sixth that on earth, due to its smaller mass. This means that a person with a mass of 70 kg on earth would weigh approximately one-sixth of their weight on earth while on the moon. Their mass however, would still be 70 kg on the moon. This is in accordance with the equation

geophysics - How is the mass of the Earth determined

Well, the formula says that anything massive is attracted to the earth with a certain force. So start plugging in some example numbers: 9.8 Newtons is the force on a 1 kg mass near the earth's surface (for example). So: 9.8 N = G * 1 kg * m2 / radius^2. We know G, we know the radius; the only thing left is to find m2 (the mass of Earth) How to calculate gravitational force. First, determine the mass of the larger object. In many cases, the larger object is a body like a planet or celestial body. In this case the mass will need to be calculated using known physics of gravity. For the most part, you can just look up the mass of any planet in the solar system Finally substituting this value of 'g' to get mass of earth we get it to be around 6.0066 x 1024 Kg, as you can see in the attached image. Actual mass of the Earth as per google is 5.972 x 1024 Kg. I think we got close. Thank you for your time, In case of any doubt refer the video or put it in the comments I will be happy to help the mass of the Earth. Solve for the mass of the Earth: m1 = aR 2/G = _____ kg Questions 1. Why is it a good idea to take many measurements and average the results? 2. Compare your value for the mass of the Earth to the true value of 6 x 1024 kg. That is, calculate the percentage difference: 3

Assume that Earth is one of the masses (M1) and a 1-kg sphere is the other (M2). The force between them is 9.8 kg*m/s 2-- we can calculate this force by dropping the 1-kg sphere and measuring the acceleration that the Earth's gravitational field applies to it (9.8 m/s 2). The radius of the Earth is 6,400,000 meters (6,999,125 yards) To find the weight on Jupiter, we divide the weight on Earth by the Earth's force of gravity, which is 9.81m/s 2. This calculates the mass of the object. Once we have the object's mass, we can find the weight by multiplying it by the gravitational force, which it is subject to

How to Calculate Mass: 10 Steps (with Pictures) - wikiHo

How to calculate Earth density by hand. Density is mass divided by volume. Mass is the physical matter of something in a total number of atoms. And volume is the amount of space an object encloses. If you know the mass and volume of an object, then you can measure density by dividing the two. For example, Earth is not a perfect sphere Mercury's mass is 3.3022 × 1023 kg or around 0.055 Earths. 42% of Mercury's volume is said to be made up of its core. Earth's core makes up a mere 17% of its volume To calculate the gravity load, one needs to get the product between the object's mass, the earth's gravitational acceleration, and the height above the ground in meters. i.e. m*g which is (9.8 m/s2) * h =mgh. Weight is the pull effect felt on a body due to gravity. The formulae for calculating weight as stated earlier is w = m * g .

Before you can calculate mass, you need to know the force of gravity. But how on earth do you measure something that's invisible? The answer is in the question. We're on Earth, and we experience gravity on a daily basis. It keeps us firmly rooted to our home world. Surely we should be able to measure the force, right The 3.82e8 is the distance of the earth from the moon given in my book. Mass of Earth = 5.98e24 Mass of Moon = 7.36e22 so then I plugged into a formula for center of mass: Xcm = X1M1 + X2M2 / total mass , where Xcm is the center of mass on the x-axis, M represents the mass, and X represents the X position on the graph The following article will guide you about how to calculate the age of the earth. Like the complex and mysterious problems of the origin of the solar system and the earth there is a lot of difference of opinions about the age of the earth and its past geological history. Various scientists have attempted to calculate the age of the earth on the.

For objects orbiting earth, this should be 5.972 × 10^24 kg. Next, determine the mass of the orbiting object. Calculate or measure the mass of the orbiting object. Next, determine the distance of orbit. This should be the average distance of orbit. Finally, calculate the orbital speed. Using the formula above, calculate the orbital speed A man has a mass of \(\text{70}\) \(\text{kg}\). The planet Zirgon is the same size as the Earth but has twice the mass of the Earth. What would the man weigh on Zirgon, if the gravitational acceleration on Earth is \(\text{9,8}\) \(\text{m·s$^{-2}$}\) However, since the Earth comprises about 98.78% (0.9878) of the mass in the Earth-moon system, our answer represents a good approximation of Jupiter's mass in earthly masses First find the mass of the object to get weight on earth by dividing the earth's force of gravity, which is 9.81m/s 2. Now we can find the weight by multiplying it by the gravitational force. The moon has a gravitational force of 1.622m/s2, we multiply the object's mass by this quantity to calculate an object's weight on the moon

Purdue unveils 'Impact: Earth!' asteroid impact effects

Gravity equation calculator solving for planet mass given universal gravitational constant, gravitational acceleration and radius from planet cente To calculate the gravity load, one needs to get the product between the object's mass, the earth's gravitational acceleration, and the height above the ground in meters. i.e. m*g which is (9.8 m/s2) * h =mgh. Weight is the pull effect felt on a body due to gravity. The formulae for calculating weight as stated earlier is w = m * g. (i Important: The slug is the base unit for mass in the English system, but the more common unit for mass is the Pound Mass (lbm).Under standard Earth gravity, 1 lbm weighs 1 lbf and therefore the term pound is usually used for both mass and weight in the English system. MASS Conversions 1 lbm = 0.45359237* kg (exact conversion) 1 kg = 2.2046226 lbm 1 slug = 32.1740486 lb

Mass of Atmosphere Riddl

Orbit of Min Mass Vesc Surface G Venus 0.55e 9,159 0.82 Earth 0.43e 8,437 0.75 Mars 0.32e 7,647 0.68 Remember the mass is the important thing, so the planet could possess a much lower density and, therefore, a much lower surface gravity should the world builder so desire For example, you could calculate the delta-V attainable by a baseball pitcher, throwing baseballs to change his orbit. Or, if you know the delta-V between an asteroid orbit and Earth orbit, you can calculate how much mass you'd have to eject from the asteroid to park it (which of course depends on how fast your mass launcher is) You can choose to input either the weight on Earth, the local weight on the planet, or the mass of the object. Then you must specify the cross sectional area and the drag coefficient. Finally you must specify the atmospheric density. We have included models of the atmospheric density variation with altitude for Earth and Mars in the calculator. The kilogram is the SI unit of mass and it is the almost universally used standard mass unit. The associated SI unit of force and weight is the Newton, with 1 kilogram weighing 9.8 Newtons under standard conditions on the Earth's surface 1 x 334672.02125167 M∅ = 334672.02125167 Earth Mass. Always check the results; rounding errors may occur. Definition: In relation to the base unit of [mass weight] => (kilograms), 1 Solar Mass (Mo) is equal to 1.999999999E+30 kilograms, while 1 Earth Mass (M∅) = 5.976E+24 kilograms

Earth's Mass - EnchantedLearning

A: To calculate weight due to gravity, you would use Newton's law of universal gravitation. The force of gravity (F) is equal to the gravitational constant (G) times the mass of one object (m1) times the mass of a second object (m2) divided by the square of the distance between them (r) The overall density of the earth is actually fairly easy to calculate: if density equals mass divided by volume, and we can find the mass and volume of the earth, the math is simple. Well, the volume is easy - we can easily arrive at a radius for the planet, and get the volume from the equation: V=4/3 X pi X r 3 . But how do we get mass

calculate the centripetal acceleration of the earth in its orbit around the sun and the net force exerted on the earth. What exerts this force on the earth? Assume that the earth's orbit is a circle of radius 1.50x10^11m. (earth's . physics. 3. A satellite of mass 500 kg orbits the Earth with a period of 6000 s. The Earth has a mass of 5.98 x. Here we will see how to calculate the time the Earth takes to go around the Sun once. We will use Newton's Universal Law of Gravitation to calculate this. Where m1 = mass of the Sun = 1.99 x 10 30 kg m2 = mass of the Earth = 5.97 x 10 24 kg r = distance between the Sun and Earth = 1.49 x 10 11 m Mass is a scalar and weight is a vector. Mass is a measurement of how much matter is in an object; weight is a measurement of how hard gravity is pulling on that object. Your mass is the same wherever you are, on Earth; on the moon; floating in space, because the amount of stuff you're made of doesn't change

We know that (m2) is the mass of the earth at 5.98×10^24 kg, T is the time period and G the universal gravitation constant at 6.67 x10^-11 kg^-2 . Radius Of A Geostationary Orbit We know every bit of information in the above equation to work out the radius of a geostationary orbit Mass. Once the distance of the nearby star is calculated, its mass can then be determined. First, the apparent luminosity of the star, or how bright it is as seen from the Earth, is measured. Using this measurement along with the stellar distance that was calculated previously, the actual brightness of the star can be determined Most people tend to think that mass and weight are the same but they are different. By definition we can define mass as the amount of matter present in a body and its SI unit is kilogram (Kg) while weight is a measure of how strongly gravity pulls on that matter and its SI unit of mass is newton (N). From the formula to calculate weight

c. mass of the earth . See Answer Answer: b and c. Use the information below and the relationship above to calculate the T 2 /R 3 ratio for the planets about the Sun, the moon about the Earth, and the moons of Saturn about the planet Saturn. The value of G is 6.673 x 10-11 N•m 2 /kg 2. Sun The law of Universal Gravitational Force is used to calculate the mass of Earth, whereas its radius is used to calculate the distance. History of Studying the Weight of Earth . Efforts to determine the weight of planet Earth began as early as the 18th century. Henry Cavendish was the first scientist to attempt to determine the weight of Earth.

How to Calculate the Period of Pendulum | Sciencing

Earth mass - Wikipedi

The earth has mass , radius and orbit radius . The earth completes one rotation on its axis in and one orbit in . Execute: (a) 2 rad 2 24 11 2 40 2 7 (5.97 10 kg)(1.50 10 m) 2.67 10 kg m /s z z z 3.156 10 s L I mr S ZZ §· u u u ¨¸. ©¹u The radius of the earth is much less than its orbit radius, so it is very reasonabl Abū Rayḥān Al-Bīrūnī, a pioneering Muslim scientist figured out a truly remarkable and ingenious method to calculate the radius of the earth (and subsequently its circumference).This method was very simple yet accurate, requiring just four measurements in all to be taken and then applying a trigonometric equation to arrive at the solution

I need to calculate the force of gravity on earth of an object that has a mass of 200 kg. Try F = Gmm/r^2 where G = the universal gravitational constant, M = the earth's mass, m = the mass of the object and r = the distance between the centers of each mass On the surface of the Earth, g is approximately 9.81 m/s^2 G is the universal gravitational constant = 6.67x10^-11 Nm^2/kg^2 M is the mass of the object. For earth M = 5.98x10^24kg r is the distance from the center of the gravitating body. For the surface of the Earth, r is approximately 6.38x10^6 m Mass of the earth = 5.98x10 24 kg, R = 6378100 m, G = 6.6726 x 10-11 N-m 2 /kg 2. Step 1: Substitute the values in the below Escape Velocity formula: This example will guide you to calculate the Escape Velocity manually. Case 2: Determine the Mars mass, where the escape velocity of mars is 5 x 10 3

Mass of Planets: How To Find The Mass of a Planet

Mass of your star. The first step is to enter the MASS of the star that your planet is orbiting. Our Sun has a solar mass of 1.0. Below 0.08 solar masses, a celestial object cannot initiate nuclear fusion and is not considered to be a star. Above 100 solar masses, the object is unstable, and so stars of such high masses probably do not form This means that we can calculate the distance between objects if their mass is known, as well as the mass of distant objects if their force of attraction is known. Answer and Explanation

Orbital Period Calculator | Binary System - OmniCalculate Your BMI |BMI Calculator - HealthyLifeEratosthenes' measurement of Earth's circumference – GeoGebraBNL | Large Synoptic Survey Telescope (LSST) | By Karen

We would like to know how scientists calculate a planet's mass. Please explain it to us in a way that a 4th grader can understand it. The only way we can measure a planet's mass is through its gravity. This has been the way Earth's mass was measured, too Processing.... Thus the Earth as a whole receives 1/4 of that solar constant. Assume a planet with an atmosphere that is transparent in the thermal infrared, with the same albedo as that of the Earth (0.306), rotating rapidly like the Earth, and orbiting at the same distance from the Sun as the Earth It's gravity is about a sixth of the Earth's making it easier to launch a spacecraft from the moon. The moon's layered structure (the crust, mantle, molten zone and core) was developed from recordings of moonquakes. The moon's surface is composed mainly of craters. In calculating the results, the mass of the Earth used was 5.98 × 10 24 kg Title: Measuring the Mass of the Earth Author: Ana Larson Created Date: 3/25/2001 11:56:54 P

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