A body of mass m is attached ot one end of a massless spring which is suspended vertically form a fixed point. The mass is held in hand, so that the spring is neither stretched nor compressed. The lowest position attained by the mass during oscillation is 4 cm below the point, where it was held in hand.
(a) What is the amplitude of oscillation?
(b) Find the frequency of oscillation?

Explanation

To solve the problem step by step, we will break it down into two parts: (a) finding the amplitude of oscillation and (b) finding the frequency of oscillation.

### Part (a): Finding the Amplitude of Oscillation

1. **Understanding the Setup**:
- We have a mass \( m \) attached to a massless spring, which is suspended vertically.
- The mass is held in hand, meaning the spring is neither stretched nor compressed.
- When released, the mass moves downwards, and the lowest position attained is 4 cm below the initial position.
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