PROBLEM 2.68 Solve Parts b and d of Problem 2.67, assuming that the free end of the rope is attached to the crate. PROBLEM 2.67 A 600-lb crate is supported by several rope-and-pulley arrangements as shown. Determine for each arrangement the tension in the rope. (See the hint for Problem 2.66.)
SOLUTION Free-Body Diagram of Pulley and Crate (b)
ΣFy = 0: 3T − (600 lb) = 0 1 T = (600 lb) 3 T = 200 lb W
(d )
ΣFy = 0: 4T − (600 lb) = 0 1 T = (600 lb) 4 T = 150.0 lb W