A wire stretches by a certain amount under a load. If the load and radius are increased to four times, find the stretch caused in the wire.

Explanation

To solve the problem, we will use the concept of Young's modulus, which relates stress and strain in a material.

### Step-by-Step Solution:

1. **Define Initial Parameters:**
- Let the original length of the wire be \( L \).
- Let the original radius of the wire be \( R \).
- Let the original load (force) applied on the wire be \( F \).
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