Question

What is the work done by the satellite ​

Answer 1

(c) Yes, the speed of a satellite does depend on the mass of the Earth. The total amount of (net) work done by gravity as a satellite makes a complete orbit is zero. The gravitational force has a component in the direction of the satellite's motion as the satellite moves toward the Sun (or Earth, or whatever).

Answer 2

┏─━─━─━─━∞◆∞━─━─━─━─┓ ✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭ ┗─━─━─━─━∞◆∞━─━─━─━─┛

The satellite moves around the earth in a circular path.

The gravitational force of the Earth is the centripetal force.

Then at every point of the circular orbit, centripetal force act on the satellite at right angles to the direction of motion of the satellite, θ = 90º.

We Know, W = F s cos θ
           = F s cos 90º
           = F s (0)
           = 0 ...✔

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