A gymnas is performing a giant swing on the high bar. IN a simplified model of the giant swing, assume that the gymnast keeps his arms and body straight. Also assume that the gymnast does no work. With what angular speed should he be moving at, at the bottom of the swing, to ensure that he can make it all the way around? The distance from the bar to his feet is 2m and his centre of gravity is 1m in.
The Attempt at a Solution
I'm not sure if I am supposed to apply conservation of energy for this question, or if there is a simpler way?
I was going to say:
Fnet*r/m = v^2
sqrt (Fnet*r/m) = v
and then convert v into angular velocity.
However, I dunno how to solve for Fnet etc.
I'm not sure how to approach this problem at all. Any help is greatly appreciated.