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OpenStudy (anonymous):
For the system shown below, find the force required to prevent the mass m2 from descending. Use the values of m1 = 7.25 kg, m2 = 1.00 kg and m3 = 1.000 kg. Assume that all surface are frictionless and that the ropes do not stretch. (Also, in the figure, assume that mass m2 is flush against m1.) http://capa.mcgill.ca/res/mcgill/dcmcgill/oldproblems/LernerCh3/graphics/lerner3_43.gif
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