Question
A spring pendulum oscillates with frequency f. If we cut a part of spring and then again disturb, how does the frequency of oscillation change?
Solution
Frequency of oscillation of spring pendulum is,

If we cut a part of spring, the spring constant of the rest of the part of the spring will increase.
Therefore, the frequency of oscillation will increase.

If we cut a part of spring, the spring constant of the rest of the part of the spring will increase.
Therefore, the frequency of oscillation will increase.