1. The problem statement, all variables and given/known data "A 40 kg child sitting 6.0 m from the center of a merry-go-round has a constant speed of 6.0 m/s. The net work (in Joules) done on the child after making one complete circle on the merry-go-round is?" 2. Relevant equations a=V^2/r F=ma C=2pi*r 3. The attempt at a solution C ≈ 37.7 m a = 6 m/s F at a point = (40)(6) = 240 N Net work ≈ (240)(37.7) ≈ 9048 J My question is, is the net work actually 0 J after one full rotation on the merry-go-round, since force is a vector quantity, and the force in one-half of the circular motion negates the force in the other half for each point? Thanks in advance!