contestada

A spring of force constant k is cut into two equal parts, and mass 'm' is suspended from parallel combination of the springs. Then frequency of small oscillations is
a) f = 1/2π√ K/m
b) f = 1/2π√ K/2m
c) f = 1/2π√ 4K/m
d) f = 1/2π√ 2K/m