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GO Figure 7-41 shows a cord attached to a cart that can slide along a frictionless horizontal rail aligned along an xaxis. The leftend of the cord is pulled over a pulley, of negligible mass and friction and at cord height h = 1.20 m, so the cart slides from x1 = 3.00 m to x2 = 1.00 m. During the move, the tension in the cord is a constant 25.0 N. What is the change in the kinetic energy of the cart during the move?
Figure 7-41 Problem 42.
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