Question

A body is made to revolve along a circle of radius r in horizontal plane at a time period T with the
help of light horizontal string such that the tension in the string is F. If the radius of circle is increased to 2r and time period of revolution is decreased to 1/2 then the tension in the string is
- 1) F/2
2) 2F
3) 4F
4) 8F​

Answer 1

Answer is given in the pic.

Answer 2

Answer:

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