1. The problem statement, all variables and given/known data A man hanging upside down is holding a partner who weighs 565 N. Assume that the partner moves on a circle that has a radius of 6.50 m. At a swinging speed of 4.40 m/s, what force must the man apply to his partner in the straight-down position? 2. Relevant equations I'm at a loss. 3. The attempt at a solution but I am pretty sure that at the bottom of the circle the man holding up the other man must hold up a force=mg where m is the mass of the bottom partner. Therefore F=565. Am I being asked the centripedial force? I tried F(centripedal)= (525/9.8)*(4.4)2 and then divide that by the radius 6.5. I got 160 which is not the correct answer.