A log that weighs 3600 lb and is 30 ft long is being hoisted by a cable that pas

Question

A log that weighs 3600 lb and is 30 ft long is being hoisted by a cable that passes over two pulleys, as shown in Fig. In the position shown, the cable from the log to the first pulley is vertical, and the log is inclined at an angle of 30 degree to the ground. Assume that neither the ground nor the block at A provides any moment restraint, and neglect the radial distance from the center of the log to the two points of contact at A. Determine the tension in the cable and the reaction force at end A. and determine the internal resultants at cross section C at the midpoint of the log.

Explanation / Answer

a) Tb*20=3600*15 tb=2700lb b)resultant will be zero

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