PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 11, Problem 8P
To determine
The force P needed to hold the bar in the equilibrium position
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The uniform links AB and BC each weigh 2 lb and the cylinder weighs 20 lb. Determine the horizontal force P required to hold the mechanism in the position when θ = 45°. The spring has an unstretched length of 6 in.
The torsional spring at B is undeformed when bars OB and BD are both in the vertical position and overlap. If a force F is required to position the bars at a steady orientation θ = 64°, determine the torsional spring stiffness kT. The slot at C is smooth, and the weight of the bars is negligible. In this configuration, the pin at C is positioned at the midpoint of the slotted bar.
The homogeneous cylinder of weight W = 100N rests in a frictionless right-angled corner. Determinethe contact forces NA and NB if θ = 30°.
Chapter 11 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
Ch. 11 - Determine the required magnitude of force P to...Ch. 11 - Determine the magnitude of force P required to...Ch. 11 - The linkage is subjected to a force P = 2 kN....Ch. 11 - Prob. 4FPCh. 11 - Determine the angle where the 50-kg bar is in...Ch. 11 - Prob. 6FPCh. 11 - The scissors jack supports a load P. Determine the...Ch. 11 - When = 20, the 50-lb uniform block compresses the...Ch. 11 - Prob. 8PCh. 11 - The thin rod of weight W rests against the smooth...
Ch. 11 - If each of the three links of the mechanism have a...Ch. 11 - Prob. 18PCh. 11 - The Nuremberg scissors is subjected to a...Ch. 11 - The potential energy of a one-degree-of-freedom...Ch. 11 - Prob. 27PCh. 11 - Prob. 28PCh. 11 - Prob. 29PCh. 11 - Prob. 30PCh. 11 - Prob. 31PCh. 11 - Prob. 32PCh. 11 - The uniform bar has a mass of 80 Kg. Determine the...Ch. 11 - Prob. 39PCh. 11 - The uniform rod has a mass of 100 kg. If the...Ch. 11 - Prob. 42PCh. 11 - The buck has a mass of 20 Mg and a mass center at...Ch. 11 - Prob. 45PCh. 11 - Prob. 1RPCh. 11 - Prob. 2RPCh. 11 - Prob. 4RPCh. 11 - Prob. 5RPCh. 11 - The uniform bar AB weighs 100 lb. If both spring...Ch. 11 - The spring attached to the mechanism has an...
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- A.The bar of negligible weight is supported by two springs, each having a stiffness k = 98 N/m. If the springs are originally unstretched, and the force is vertical as shown, determine the angle the bar makes with the horizontal, when the 31-N force is applied to the bar. B.Determine the stiffness k of each spring so that the 32-N force causes the bar to tip = 13.6° when the force is applied. Originally the bar is horizontal and the springs are unstretched. Neglect the weight of the bar.arrow_forwardDetermine the tensions in the cable, normal force in the smoothsurfaces and the angle of inclination of the surface in the right ifthe block in the left and right weigh 300N and 500N,respectively. (Assume frictionless pulley)T =NA =NB =θB =arrow_forwardThe chain binder is used to secure loads of logs, lumber, pipe, and the like. If the tension T1 is 2.2 kN when θ = 38°, determine the force P required on the lever and the corresponding tension T2 for this position. Assume that the surface under A is perfectly smooth.Assume a = 120 mm, b = 510 mm.arrow_forward
- The ring weighs 5 N and is in equilibrium. The force F1 = 4.5 N. Determine the force F2 and the angle ∝.arrow_forwardBoth pulleys are fixed to the shaft and as the shaft turns with constant angular velocity(still equilibrium), the power of pulley A is transmitted to pulley B. Determine the horizontal tension (force T)in the belt on pulley B and the x, y, z components of reaction at the journal bearing C and thrust bearing D if ?= 0°. The bearings are in proper alignment and exert only force reactions on the shaftarrow_forwardThe spring has a stiffness of k = 800 N/m and an unstretched length of 200 mm. Determine the force in cables BC and BD when the spring is held in the position shown. A k = 800 N/m -500 mm 400 mm- 400 mm 300 mmarrow_forward
- The dimensions a = 2 m and b = 1 m. The couple M = 2400 N-m. The spring constant is k = 6000 N/m, and the spring would be unstretched if h = 0. The system is in equilibrium when h = 2 m and the beam is horizontal. Determine the force F and thereactions at A.arrow_forwardMasses M1 and M2 are held on the frictionless inclined plane by a rigid inextensible bar of length l as shown in diagram find the angle θ under equilibrium condition in terms of M1, M2 and θ1arrow_forwardEach spring has an unstretched length of 2 in and a stiffness of fc = 330 N/m . 1. Determine the stretch in 04 spring required to hold the 18-kg crate in the equilibrium position shown. 2. Determine the stretch in OB spring required to hold the 18-kg crate in the equilibrium position shown.arrow_forward
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