Question

A body of mass 2 kg is tied to the end od a string 2 m long and revolved in horizontal circle .If the breaking tension of the string is 400 N, then the maximum velocity of the body will be
A. `10mm//s`
B. `30m//s`
C. `20m//s`
D. `40m//s`

Answer 1

Correct Answer - C
`T=(mv^(2))/(r) therefore v^(2)=(Tr)/(m)`