Question

A stone of mass 1 kg is tied to the end of a light string 1 m
long. It is rotated in a vertical circle. If the velocity of the
stone at the top be 4 m/s, Work done by tension on stone is
[Take g = 10 m/s

Answer 1

Answer:

6Newton

Explanation:

T+mg=

r

mv

2

​

T=

r

mv

2

​

−mg

1

1×4

2

−1(10)

=16−10

=6N

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