Class 11 NEET Physics Oscillations Questions

A mass M is suspended from a massless spring of spring constant k as shown in figure (a). Then,
Time period of oscillation is T=2π√

M

k

....(i)
When a another mass M is also suspended with it (a) as shown in figure (b). Then, Time period of oscillation is
T′=2π√

M+M

k

=2π√

2M

k

=√2(2π√

M

k

)=√2T (Using (i))