The displacement of a particle of mass 2kg moving in a straight line varies with times as `x = (2t^(3)+2)m`. Impulse of the force acting on the particle over a time interval between t = 0 and t = 1 s is

Options

A. 10 Ns
B. 12 Ns
C. 8 Ns
D. 6 Ns

Answer

A

Explanation

Using conservation of angular momentum about centre of ring.
`MR^(2)omega=(MR^(2)+2mR^(2))omega'`
`omega'=(omegaM)/(M+2m)`