A 40 gm mass produces on extension of 4 cm in a vertical spring. A mass of 200 gm is suspended at its bottom and left pulling down. Calculate the frequency of its vibration.

Explanation

To solve the problem step by step, we will follow these instructions:

### Step 1: Determine the spring constant (k)
Given that a 40 gm mass (0.04 kg) produces an extension of 4 cm (0.04 m) in the spring, we can use Hooke's Law, which states:

\[ F = kx \]

Where:
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