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A body of mass 100 gram , tied at ...

A body of mass 100 gram , tied at the end of a string of length 3m rotes in a vertical circle and is just able to complete the circle . If the tension in the string at its lowest point is 3.7 N, then its angular velocity will be _____
`[ g= 10 m//s^(2)]`

A

`4 rad//s`

B

`3rad //s`

C

`2 rad //s`

D

`1 rad//s`

Text Solution

Verified by Experts

The correct Answer is:
B
At the lowest point ,
`T- mg =m r omega ^(2)`
`therefore 3.7 - 0.1 xx10 =0.1 xx3xx omega ^(2)`
`2.7 = 0.3 omega^(2) " " therefore omega ^(2) =9 or omega =3 rad //s `
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