While walking, your hip moves along an approximately circular path centered on your foot. The radius of this circular path is the distance between your foot and your hip, designatedL.(Figure 1)Since your entire weight is supported by the hip attached to the leg in contact with the ground, we can approximate your entire mass as undergoing circular motion of radiusL. The force that leads to this circular motion is the force of gravity.

Imagine a small child whose legs are half as long as her parent's legs. If her parent can walk at maximum speed V , at what maximum speed can the child walk?