factorise
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In the arrangement of Fig. 1.9 the masses mo, m1, and m2
of bodies are equal, the masses of the pulley and the threads are
negligible, and there is no friction in the pulley. Find the accel-
eration w with which the body mo comes down, and the tension of
the thread binding together the bodies m1 and m2, if the coefficient
of friction between these bodies and the horizontal surface is equal
to k. Consider possible cases.
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