The weight of the 400-lb boom in the derrick pictured below is uniformly distrib- uted along its length. By considering the equilibrium conditions for the boom, nd the tension in the cable running from A to B (which need not be the same as the tension in the cable below B) and the horizontal and vertical forces exerted on the boom at point C by the hinge of the derrick. By considering the equilibrium con- ditions for point B, calculate the force exerted by the boom on the cable at point B. 2000 lb