A bone has a larger youngs modulus for stretch 16 x 1010, Ask an Expert

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a) Bone has a larger Young's modulus for stretch (1.6 x 10^10 N/m^2) than for compression (0.94 x 10^10 N/m^2). By how much is each femur, or thigh bone, of the legs compressed when a weightlifter lifts 2200 N? Take the dimensions of the femur to be 0.6 m long and have an average radius of 0.01 m.

b) A medieval knight is "racked", stretching his body with a force of 1200 N. Using the data in the previous problem, by how much will the knight's femur bones be stretched?

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