A gymnast on the uneven parallel bars has a vertical speed υ0 and no angular speed when sh...

A gymnast on the uneven parallel bars has a vertical speed υ0 and no angular speed when she grasps the upper bar. Model the gymnast as a single uniform rigid bar A of weight W = 92 lb and length ℓ = 6 ft. Neglecting all friction, letting β = 12° ,and assuming that the upper bar B does not move after the gymnast grasps it, determine υ0 if the gymnast is to swing (counterclockwise) so as to become horizontal. Assume that, during the motion, the friction between the gymnast’s hands and the upper bar is negligible.

Figure P8.90