Question

What is the work done by the moon in rotating about the earth


Myself David
Class 9
Age:17
Fr●m mizoram ​

Answer 1

Answer:

Solution: When the moon revolves around the earth, the displacement is normal to the direction of force on the moon. Therefore no work is done by the moon.

Answer 2

Answer:

Solution: When the moon revolves around the earth, the displacement is normal to the direction of force on the moon. Therefore no work is done by the moon.

Explanation:

The work done by the moon when it revolves around the earth is zero because here displacement of moon and gravitational force of earth are perpendicular to each other.

i.e., Work done (W) =F×d×cosθ

where F = applied force

d = displacement of the body

θ = angle between the applied force and the displacement of the body

In the case of revolution of moon around the earth, θ is 90°. Thus, W=F×d×cos90°

= F×d×0=0

So, the work done by the moon when it revolves around the earth is zero.

Thank you