At a playground you let your kid sister (30 kg) kneel on the
surface (near the edge) of a 2 meter diameter merry-go-round, of
mass 300 kg. You push the merry-go-round along the edge, so that it
constantly accelerates from rest to a final speed of 1.5 rotations
per second at the end of a 20 sec interval. Friction is negligible.
b) How much force did you apply in the direction tangent to the
circumference of the merry-go-round, at the...