# What is the work done of the satellite moving around the earth ? explain .

2
by anupamaniPANTHA

2015-11-14T19:02:50+05:30

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Hi there,
the work done by satellite  is zero as the displacement is 0.
ie w=fs,since s=0 as initial position =final position ,work is zero.
i hope this helps u ...
2015-11-14T22:21:00+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

Work done = Force * displacement * Cos Ф,
where Ф = angle between force and displacement vectors.

When the satellite moves UNIFORMLY in a CIRCULAR orbit, the force on the satellite along the circular path is 0.  Therefore the work done is 0 in that direction.

There is a centripetal force acting along the radius, and the displacement is along the tangential direction.  So Ф = π/2.  Hence, the work done is 0.
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Another way, is  the potential energy (gravitational) is constant as radius is fixed.  The kinetic energy is same as speed is constant.  There is no friction or other loss.  Hence, there is no work done.

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