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Question

A body is moving with a constant speed of 5 m/s in a circle of radius 2 m. The net acceleration of the body is

A
0
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B
12.5 ms2
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C
25 ms2
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D
None of these
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Solution

The correct option is B 12.5 ms2
Let ac be the centripetal acceleration. We know that
ac=v2r=522=12.5 m/s2

Since the speed is constant, tangential acceleration is zero. So, the only acceleration acting is centripetal acceleration which is the net acceleration

Hence option B is the correct answer.

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