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Unformatted text preview: must the coecient of static friction s between object and turntable lie ? Problem 2 (10 points) igure 1 shows a block of mass m = 15 . 0 kg hanging from three strings. Calculate the tensions in the three strings. (Page 2 of 3) Problem 3 (10 points) Two blocks of mass m 1 = 5 . 0 kg and m 2 = 2 . 0 kg are supported by the system of pulleys and strings shown in the Fgure below. Mass m 1 is at rest at height h = 0 . 8 m above the ground when the system is released. At what speed will m 1 hit the ground ? Neglect the mass of the strings and pulleys, the friction in the pulleys, and any drag forces. Problem 4 (10 points) A chain of length L = 26 cm and mass m = 14 g is held on a frictionless table with a third of its length hanging over the edge. How much work is required to pull the hanging part back onto the table ? (Page 3 of 3)...
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