Question

How much work is done by the gravitational force of earth acting on a satellite movin in a circular path?

Answer 1

Answer:

No work is done by the gravitational force of earth acting on a satellite moving around it in a circular path because the gravity is always pointing towards the center of the earth which provides the centripetal force required for circular motion and the satellite is going tangentially, the angle between is 90 degrees.

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Answer 2

Answer:

In circular motion the force acting toward the centre,so the angle between displacement(S) and the force becomes 90

0

.

As, W=FScosθ

Since, cos90

0=0

So, W=0