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Three objects with masses m 1 = 7.4 kg, m 2 = 14 kg, and m 3 = 19 kg, respectively, are attached by strings
Three objects with masses
m1 = 7.4 kg,
m2 = 14 kg,
and
m3 = 19 kg,
respectively, are attached by strings over frictionless pulleys as indicated in the figure below. The horizontal surface exerts a force of friction of 30 N on m2. If the system is released from rest, use energy concepts to find the speed of m3 after it moves down 4.0 m. answer m/s
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