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A person is swinging with a 0.1 kg mass on a string in a horizontal circle whose radius is 80cm. The mass goes in 1s. 1)what is centripetal force on the mass? 2) if the speed is doubled does the centripetal forse double? If not by what factor does it increase?

A person is swinging with a 0.1 kg mass on a string in a horizontal circle whose radius is 80cm. The mass goes in 1s.
1)what is centripetal force on the mass?
2) if the speed is doubled does the centripetal forse double? If not by what factor does it increase?

Grade:11

1 Answers

Shivansh
askIITians Faculty 267 Points
5 years ago
centripetal force will be – mv2/r
(0.1)(2*3.14*0.8)2/0.8
6.28*0.08 = 0.5

If the speed is doubled, and the radius is kept same, the force quadruples

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