The pinion A of the hoist motor drives the inner drum C through an inextensible belt,...
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The pinion A of the hoist motor drives the inner drum C through an inextensible belt, which is fixed to the hoisting outer drum B. If the pinion starts from rest and rotates at an angular acceleration of 5 rad/s² and the belt does not slip against either pinion A or inner drum C, determine (a) the magnitude of acceleration of point E on the drum which is in contact with the cable that hoists block D, and (b) the acceleration of block D at the moment when it has traveled up a distance of 12 inches. The dimensions shown in the graph are: r = 4.5 in; r = 12 in; r = 9 in E B F D 12" The pinion A of the hoist motor drives the inner drum C through an inextensible belt, which is fixed to the hoisting outer drum B. If the pinion starts from rest and rotates at an angular acceleration of 5 rad/s² and the belt does not slip against either pinion A or inner drum C, determine (a) the magnitude of acceleration of point E on the drum which is in contact with the cable that hoists block D, and (b) the acceleration of block D at the moment when it has traveled up a distance of 12 inches. The dimensions shown in the graph are: r = 4.5 in; r = 12 in; r = 9 in E B F D 12"
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