A horizontal 652 n merry-go-round of radius 1.37 m is started from rest by a constant horizontal force of 77 n applied tangentially to the merry-go-round. find the kinetic energy of the merry-goround after 3.93 s. the acceleration of gravity is 9.8 m/s 2 . assume the merry-go-round is a solid cylinder. answer in units of j.
