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Question

A ball of mass m is attached with the string of length R, rotating in a circular motion, with instantaneous velocity v and centripetal acceleration a.
Calculate the centripetal acceleration of the ball if its mass is doubled?

A
a/4
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B
a/2
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C
a
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D
2a
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E
4a
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Solution

The correct option is C a
As centripetal acceleration is given by a=v2/R
therefore centripetal acceleration does not depend upon mass of ball, so it will remain constant ,equal to a.

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