Question: Youngs modulus for bone under compression is about 9 10 9 Pa, and the breaking stress is about 2 10 8 Pa. (a)

Young’s modulus for bone under compression is about 9 × 10⁹ Pa, and the breaking stress is about 2 × 10⁸ Pa.

(a) A leg bone of length 30 cm when unstressed is stressed to its breaking point. What is the change in length of the bone?
(b) If the bone has a diameter of 3 cm, how much weight can it support just before it breaks?

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