A 45 kg boy whose leg bones are `5 cm^(2)` in area and 50 cm long falls through a height of 2m with out breaking his leg bones. If the bones can stand a stress of `0.9 xx 10^(8) Nm^(-2)`, Calculate the Young's modulus for the material of the bone. Use , `g=10 ms^(-2)`

Explanation

To solve the problem step-by-step, we will calculate the Young's modulus for the material of the bone using the given data.

### Step 1: Calculate the weight of the boy
The weight \( W \) can be calculated using the formula:
\[ W = m \cdot g \]
where:
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