# Would You Ever Try This Out?

A $$\text{40 kg}$$ boy whose legs are $$4 cm^2$$ in area & $$50 cm$$ long, falls through a height of $$2m$$ without breaking his leg bones.If the bones of the legs can stand a stress of $$9 \times 10^7 Nm^{-2}$$, calculate the magnitude of Young's modulus of the leg bone of the boy.

#### Details and Assumptions:

Give your answer in $$Nm^{-2}$$.
Suppose your answer is $$1.176 \times 10^{17}$$. Then write it as 1.176E+17

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