Question

Moon revolves around the earth due to gravitational force of earth's on moon the word done by the gravitational force is

Answer 1

Answer:

Moon revolves around the Earth .

This revolution is attributed to the gravitational force of the Earth.

Now, we have to find out the work done by the Gravitational force.

Formulas used:

Work done is given by dot product between distance vector and force vector.

Mathematically:

W = F . d

=> W = F × d × cos(θ) ,

where θ is the angle between the 2 vectors.

Calculation:

During revolution of moon around the Earth, the angle between force and displacement vector is 90°

so θ = 90°

Therefore,

work done = F × d × cos(90°)

=> work done = 0 J.

Answer 2

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Refer the attachment.