9. The uniform beam of mass m = 11.0 kg shown is supported at its left end by a hinge attached to a wall and on its right end by a scale sitting on the floor. A weight W is suspended half way between the center of the beam and the right end as shown. If the scale reads a force F = 320 N, what is the weight W? beam center beam of mass m hinge W F scale wall floor A) W = 536 N B) W = 375 N C) W = 420 N D) W = 355 N E) W = 348 N