ICSE Class 10 Physics 2020 Solved Paper
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Question : 4
Total: 67
A satellite revolves around a planet in a circular orbit. What is the work done by the satellite at any instant? Give a reason.
Solution:
The work done is zero.
Reason : The centripetal force acting on the satellite is perpendicular to the displacement.
As we know,W = FS cos θ ∵ θ = 90 ∘
⇒ cos 90 ∘ = 0 , ⇒ W = 0
so the work done will be zero.
Reason : The centripetal force acting on the satellite is perpendicular to the displacement.
As we know,
so the work done will be zero.
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