3) Bar BC weighs 161 lb and has a radius of gyration of mass with respect to a hor-
izontal axis through G of 3.0 ft. The bar is supported by the cords AB and CD which rotate in the same vertical plane. The speed of the mass centre, when in the position shown, is 12 fps. Determine the tension in cables AB and CD for this position.
60
60
G
3
5