The semicircular disk has a mass of 50 kg and is released from rest from the position shown.the coefficients of static and kinetic friction between the disk and the beam are as= 0.5 and ax=0.3 respectively. determine the initial reactions at the pin a and roller b, used to support the beam. neglect the mass of the beam for the calculation. 0.4 m 25 m 1.75 m
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