A particle is executing SHM with amplitude A. At displacement `x=(-A/4)`, force acting on the particle is F, potential energy of the particle is U, velocity of particle is v and kinetic energy is K. Assuming potential energyh to be zero at mean position. At displacement x=A/2

Options

A. force acting on the particle will be 4F.
B. potential energy of particle will be 2 P.E.
C. velocity of particle will be `sqrt(2/5)`v.
D. kinetic energy of particle will be 0.8 K.E.

Answer

D