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Centripetal Force and Circular Motion

A particle de...

Question

A particle describes a horizontal circle of radius $0.5 m$ with uniform speed. The centripetal force acting on it is $10 N$ . The work done in describing a semicircle is

A

0 J

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B

5 J

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C

5 π J

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D

10 π J

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Solution

The correct option is B $0 J$
$W = F s cos 90^{\circ} = 0$

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