A horizontal 779 N merry-go-round of radius
1.28 m is started from rest by a constant
horizontal force of 43.1 N applied tangentially
to the merry-go-round.
Find the kinetic energy of the merry-go round after 2.5 s. The acceleration of gravity
is 9.8 m/s². Assume the merry-go-round is a solid cylinder.
Answer in units of J.