Assume that Young's modulus for bone is 8.66 109 N/m2 and that the bone will fracture if a shear stress more than 2.31 108 N/m2 is exerted.

Assume that Young’s modulus for bone is 8.66 × 109 N/m2 and that the bone will fracture if a shear stress more than 2.31 × 108 N/m2 is exerted.What is the maximum force that can be exerted on the femur bone in the leg if it has a minimum effective diameter of 3.4 cm? Answer in units of kN.