The 12-ft boom AB has a fixed end A. A steel cable is stretched from the free end B of the boom to a point Clocated on the vertical wall. If the tension in the cable is 412 lb, determine the moment about A of the force exerted by the cable at B. y 8 ft 4.8 ft 12 ft B x The moment about A of the force exerted by the cable at B is lb-ft)i + Note: This is the same moment you would get using the force at point C on the cable. lb-ft)j+ lb-ft)k.