Question

The bone breaks if stress greater than 1.50 x 10 8 N/m 2 is imposed on it. (a) What is the

maximum force that can be exerted on the male humerus in the upper arms if it has a

minimum effective diameter of 5.87 cm? (b) If this much force is applied, by how much

does the 27.0-cm-long humerus stretched? Assume Young’s modulus for bone is 1.50 x

10 10 Pa.

Answer 1

$F=pS=406~kN,$

$x=l\frac pE=2.7~mm.$