Assume young’s modulus for bone is 1.50 3 1010 n/m2. the bone breaks if stress greater than 1.50 3 108 n/m2 is imposed on it. (a) what is the maximum force that can be exerted on the femur bone in the leg if it has a minimum effective diameter of 2.50 cm? (b) if this much force is applied compressively, by how much does the 25.0-cm-long bone shorten?

Explanation:

E=1.50x10^10 N/m2     Young's modulus of bone

σmax=1.50x10^8 N/m2       Max stress tolerated by the bone

Relation between stress and Force:

Relation between stress and strain:

Young's modulus is defined by the ratio of longitudinal stress σ , to the longitudinal strain ε:

We solve these equations to find the bone compression:

28. evolution

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explanation: