A nut is opened by a wrench of length 20 cm. If the least force required is 2 N, find the moment of force needed to loosen the nut.

Explanation

To solve the problem of finding the moment of force needed to loosen the nut, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Moment of Force**:
The moment of force (also known as torque) is calculated using the formula:
\[
\text{Moment of Force} = \text{Force} \times \text{Distance}
...