In the above problem, the frequnecy of oscillations of the cage will be-

Options

A. `1/2pi[k/m]^(1//2)`
B. `(1)/(2pi)[k/M]^(1//2)`
C. `(1)/(2pi)[(k)/(M+m)]^(1//2)`
D. `(1)/(2pi)[m/k]^(1//2)`

Answer

C

Explanation

`f = (1)/(2pi)sqrt((k)/(m + M))`