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A 10kg ball a...

Question

A 10kg ball attached to the end of a rigid massless rod of length 1 cm rotates at constant speed in a horizontal circle of radius 0.5 m and period 1.57 sec as in fig. The force exerted by rod on the ball is

A

1.28 N

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B

128 N

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C

10 N

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D

12.8 N

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Solution

The correct option is B 128 N

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