What is the work done by a force when the force is:
Normal to the displacement produced.

Explanation

To find the work done by a force when the force is normal (perpendicular) to the displacement produced, we can follow these steps:

### Step 1: Understand the formula for work done
The work done (W) by a force is calculated using the formula:
\[ W = F \cdot d \cdot \cos(\theta) \]
where:
- \( W \) is the work done,
- \( F \) is the magnitude of the force,
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