When a steel wire is loaded with a weight of 3 kg , its length increases y 0.2 cm . Calculate the force constant of the wire and the work done in stretching the wire .

Explanation

To solve the problem step by step, we will calculate the force constant (k) of the steel wire and the work done in stretching the wire.

### Step 1: Calculate the Force
The force (F) exerted by the weight can be calculated using the formula:
\[ F = m \cdot g \]
where:
- \( m = 3 \, \text{kg} \) (mass of the weight)
- \( g = 9.8 \, \text{m/s}^2 \) (acceleration due to gravity)
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