"A wrench of longer arm as compared to a wrench of shorter arm is preferred." Why?

Explanation

To understand why a wrench with a longer arm is preferred compared to a wrench with a shorter arm, we can analyze the concept of torque. Here’s a step-by-step solution:

### Step 1: Understand Torque
Torque (τ) is defined as the rotational equivalent of linear force. It is calculated using the formula:
\[ \tau = r \times F \]
where:
- \( \tau \) is the torque,
- \( r \) is the distance from the axis of rotation to the point where the force is applied (also known as the lever arm),
...