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Problem 10.65 (10 pts.) Two weights are connected by a very light, flexible cord that passed over an 80.ON frictionless pulley of radius 0.300 m. The pulley is a solid uniform disk and is supported by a hook connected to the ceiling (see figure on the right). (a) What force does the ceiling exert on the hook? (b) How would the force in part (a) change if the pulleys radius doubled? (Note: The pulley being frictionless means it rotates about its axis without friction; however the cord passing over the pulley docs not slip, causing the pulley to rotate as the two weights move. 75.0 N 125 N

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