A block of 1 kg is stopped against a wall by applying a force F perpendicular to the wall. If `mu=0.2` then minimum value of F will be

Explanation

To solve the problem, we need to determine the minimum force \( F \) required to stop a block of mass \( 1 \, \text{kg} \) against a wall, given that the coefficient of static friction \( \mu = 0.2 \).

### Step-by-Step Solution:

1. **Identify the Forces Acting on the Block**:
- The weight of the block \( W = mg \) acts downwards, where \( m = 1 \, \text{kg} \) and \( g \approx 10 \, \text{m/s}^2 \).
- The applied force \( F \) acts perpendicular to the wall.
- The normal force \( N \) acts perpendicular to the wall due to the applied force \( F \).
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