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[نيووزكـ كيمي*]

1- Assume that Young’s modulus is 1.5*10^10 N/m^2 for bone and that the bone will fracture if stress greater than 1.5*10^8 N/m^2 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 25.0cm-long bone shorten?

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