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A meter rule is balanced at the 70 cm mark by placing a 200-g mass at the 80 cm mark. At what point will the ruler balance if the 200-g mass is moved to the 90 cm mark? Two blocks of masses 15kg and 25kg are on a double inclined plane connected by a rope. What is the tension on the rope connecting the two masses? What is the acceleration of the two-mass system? A crate weighing 9800 N is pulled up a 37o incline by a pulley system. If the coefficient of kinetic friction between the crate and the plane is 0.75 N, what is the total force that opposes its motion up the plane?

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