Asked by Bret
                A 89.0 kg person stands on one leg and 90% of the weight is supported by the upper leg connecting the knee and hip joint-the femur. Assuming the femur is 0.640 m long and has a radius of 1.90 cm, by how much is the bone compressed? 
            
            
        Answers
                    Answered by
            drwls
            
    You will need to look up Young's modulus (Y) for femur bone material.
Then use
deltaL = L*(stress)/Y
Stress = M g/area
    
Then use
deltaL = L*(stress)/Y
Stress = M g/area
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