Structure O A B C is built in at point O and supports forces from two cables. Cable E A D passes through a frictionless ring at point A, and cable O C G passes through a frictionless ring at point C. If the force in cable E A D is 800 lb and the force in cable O C G is 400 lb. determine the moment of all cable forces about point A
A circular disk rotates on a bearing at point A, and has a string BCD attached to it. The pulley at Cis frictionless, and the string supports a weight W = 10 lb. Determine the moment of the force in segment BC of the string about point A for any position of the disk where 0° ? ? ? 360°, and plot the moment versus ?. Neglect the size of the pulley.