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15. A 5.0 kg ball is dropped from a height of 12.0 m above one end of a uniform bar that pivots at its center.
15. A 5.0 kg ball is dropped from a height of 12.0 m above one end of a uniform bar that pivots at its center. The bar has mass 8.0 k and is 4.0 m in length. At the other end of the bar sits another 5.0 kg ball, unattached to the bar. The dropped ball sticks to the bar after the collision. How high will the other ball go after the collision?16. Two weights are connected by a very light, flexible cord that passed over an 80.0 N frictionless pully of radius 0.3 m. The pulley is a solid uniform disk and supported by a hook connected to the ceiling. What force the does ceiling exert on the hook? 125 N 75.0 N
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