A child of mass 35 kg stands at the edge of a merry-go-round of mass 140 kg and radius 2...

A child of mass 35 kg stands at the edge of a merry-go-round of mass 140 kg and radius 2.5 m, and both are initially at rest. The child then walks along the edge of the merry-go round until she reaches a point opposite her starting point as measured on the ground (point B in Fig. P9.59). How far does the child walk as measured relative to the merry-go-round?