A horizontal 694 N merry-go-round of radius 1.96 m is started from rest by a constant horizontal force of 61.5 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go round after 3.89 is. The acceleration of gravity is 9.8 m/s 2 . Assume the merry-go-round is a solid cylinder. Answer in units of J.

808.19J

Explanation:

Image attached gives a proper explanation

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

+15-35=-20

going in opposite directions