A body of mass `0.5kg` is performing `SHM` with a time period `.^(pi)//_(2)` seconds. If its velocity at mean position is `1ms^(-1)`, then restoring force acting on the body at a phase angle `60^(@)` from exterme position is

Options

A. `0.5N`
B. `1N`
C. `2N`
D. `4N`

Answer

B

Explanation

`K = (4pi^(2)m)/(T^(2)), V_(max) = A omega, F=Kx = KA Cos .(pi)/(3)`