A crate of mass m1 on a frictionless inclined plane is attached to another crate of mass m2 by a mass less rope. The rope passes over an ideal pulley so the mass m2 is suspended in air. The plane is inclined at an angle ( = 36.9°. Use conservation of energy to find how fast crate m2 is moving after m1 has traveled a distance of 1.4 m along the incline, starting from rest. The mass of m1 is 12.4 kg and the mass of m2 is 16.3 kg?

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