Initially the block of mass m is in equilibrium in vertical plane as shown and dielectric slab of some mass. When it is slightly displaced from mean position (pulleys are ideal and spring is massless):
(A) Dielectric will perform SHM having time period 2π√m/ks
(B) Dielectric will perform SHM having time period more than 2π√m/ks
(C) Dielectric will perform SHM having time period less than 2π√m/ks
(D) Dielectric will not perform periodic motion.
