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Two blocks with different masses m1 and m2 and m1 is larger than m2. They are...

Two blocks with different masses m1 and m2 and m1 is larger than m2. They are attached to either end of a light rope that passes over a light, frictionless pulley suspended from the ceiling. The mass are released from rest, and the more massive one starts to descend. After this block has descended 1.6 m, its speed is 2.2 ms-1. If the total mass is 4.1 kg, what is the mass of the heavier block m1 (unit is kg)? g=9.8ms-2

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