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friction.55.Find the tension T needed to hold the cart in equilibrium, if there is no0°(1 Mg(2) Mg10/3(3) Mg(4) Mg42

Answer»

The net horizontal forces must be balanced, since tendency of motion is in horizontal direction. Assume the tension in string to be T1. Then T1 = Wsin30= W/2. Now the horizontal component of this force must be equal to tension T. Therefore, T1cos30=T. Hence, T = root3 /4 mg



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