A 350 N beam of uniform density is hinged on a wall. A 200 N object hangs off the end of the beam at a distance l from the wall. A cable supports the beam by an upward tension of T at a distance of 2 l /3 from the wall and at an angle of 168 degrees by respect to the horizontal (with respect to the positive x axis). (a) Discover the magnitude of the tension T. (b) Discover the force the wall exerts on the beam.