Bank robbers have pushed a 1000 kg safe to a second-story
Chapter 7, Problem 7.19(choose chapter or problem)
Bank robbers have pushed a 1000 kg safe to a second-story floor-toceiling window. They plan to break the window, then lower the safe 3.0 m to their truck. Not being too clever, they stack up 500 kg of furniture, tie a rope between the safe and the furniture, and place the rope over a pulley. Then they push the safe out the window. What is the safes speed when it hits the truck? The coefficient of kinetic friction between the furniture and the floor is 0.50.
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