The strength of long bones, as well as slender structural members in general, is directl...

The strength of long bones, as well as slender structural members in general, is directly related to the area moments of inertia, such that if the moments of inertia increase, then strength increases. From the point of view of the ratio of strength to weight, discuss why most long bones in humans and animals, such as the human femur shown, are hollow.

Note: Concept problems are about explanations, not computations.