posted by Meg .
A child pushes a merry-go-round with a force of 55.0 N at an angle tangent to the circle (that is, perpendicular to a radius). If the child pushes it through exactly one full circle, and the merry-go-round has a radius of 1.15 m, how much work does she do?
? Please explain!
W=M•φ =F•R•φ =55•1.15•2•π =518.4 J