Question
Asked Nov 25, 2019
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Find the force of gravity between Earth (mass=6.0 x 10^24kg) and the Moon (mass=7.4 x 10^22kg). The average Earth-Moon distance is 3.8 x 10^8m.

Express your answer to two singificant figures and include the appropriate units.

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Expert Answer

Step 1

Given,

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G= 6.67x101 Nm2 /kg2 m 6.0x104 kg = 7.4x 10 kg d 3.8x 10 m

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Step 2

Force of gravity (F) with mass of earth as me and mass of sun as ms and d is the average distance from earth to moon. It can be evaluated as:

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Gm m F == а

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Step 3

Now, plugging the given and d...

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(6.67 x1011 Nm2 /kg2 )(7.4x1022 kg)(6.0 x1024 kg) (3.8x108 m) F = F 2.05x 1020N

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Tagged in
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Gravitation

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