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Mathematics 7 Online
OpenStudy (anonymous):

the system shown in the figure is used to lift an object of mass m 76.0 kg . a constant downward force of magnitude F is applied to the loose end of the rope such that the hanging object moves up ward at constant speed. neglecting the masses of the ropes and pulleys. find a the required value of f . b- the tension t1 t2 t3

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