PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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The bucket weighs 15 Ibs. determine the forces in the cables.
2.5 ft-
4.5 ft
3 ft
1,5 ft
3 ft
-1.5 ft-
If blocks D and F weigh 5 lb each, determine the weight of block E if the sag s=3 ft. Neglect the
size of the pulleys.
4 ft
4 ft-
D.
the tree feller cuts off large trees near ground level and then continues to grasp the trunk. Determine the force in hydraulic cylinder AB for the position shown if the tree weighs 6000lb. Determine the required pressure on the 4.72-in.-diameter piston of the cylinder.
draw the free body diagram
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- The 80-kg crate has its center of gravity at G. Determine the smallest force P that will initiate motion if =35.arrow_forwardDetermine the smallest horizontal force P that would push the homogeneous cylinder of weight W over the curb. Neglect friction.arrow_forwardThe homogeneous bar AB weighs 25 lb. Determine the magnitudes of the forces acting on the bar at A and B. Neglect friction.arrow_forward
- The homogeneous plate of weight W is suspended from two cables. Determine the force P that is necessary to keep the plate in the position shown.arrow_forwardThe cable AOB weighs 24 N/m. Determine the sag H and the maximum tension in the cable.arrow_forwardThe horizontal boom carries the weight W=108lb at A. The boom is supported by the cables AB and AC. The tensions in the cables are TAB=120lb and TAC=160lb. Determine the single force R that is equivalent to three forces acting on the boom at A.arrow_forward
- The woman is trying to move the crate of weight W by pulling on the rope at the angle to the horizontal. Find the smallest possible tension that would cause the crate to slide and the corresponding angle .arrow_forwardThe homogeneous plate of weight W is supported by a ball-and-socket joint at D and three wires. Draw the FBD of the plate and count the unknowns.arrow_forwardDetermine the force in cable BC and the spring stiffness (k) in N /m when the spring is held in the position shown. The force in cable BD is 150 N and the spring has unstretched length of 400mm. 600mm 200mm 800mm 300mmarrow_forward
- Two men exert forces F and P on the ropes. If P = 48 Ib, what is the required force F to maintain equilibrium? Supply the answer in pounds. 6 ft 12 ftarrow_forwardPiston ① has a diameter of 0.35 in.; piston ② has a diameter of 1.3 in. In the absence of friction, determine the force necessary to support the 500-lb weight. (Enter magnitude.) lb.arrow_forwardThe homogeneous cylinder of weight W = 100N rests in a frictionless right-angled corner. Determinethe contact forces NA and NB if θ = 30°.arrow_forward
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