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Uniform Circular Motion

What is the w...

Question

What is the work done by the centripetal force in moving the body through half circle of the radius $35$ $m$ .

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Solution

We know that $d W = \int \to F . \to d r$

Since, centripetal force is always perpendicular to velocity.

Hence, $\to F . \to d r = 0$

Hence, $W = 0$

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