A body of mass m is moving in a circle of radius r with a constant speed v .
A body of mass m is moving in a circle of radius r with a constant speed v . The force on the body is mv2/r and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle
(a) mv2/r x πr
(b) Zero
(c) mv2/r2
(d) πr2/mv2
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Correct Option (b) Zero
Explanation:
Work done by centripetal force is always zero.
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