PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 11, Problem 2RP
To determine
The horizontal force P required to hold the
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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.
Determine the n- and t-components of the force F which is exerted by the rod AB on the crank OA. Evaluate your general expression
for F = 118 N and (a) e = 30°, B = 25° and (b) e = 21°, B = 29°
Answers:
(a) Fn= i
N, F: =
i
N
(b) Fn =
i
N. F:=
N
The Crane consist of 3 parts. W1=1800 kg acting from G1, W2=450 kg acting from G2 and W3=750 kg acting from GS. The Crane is iting a block of mass = 400 kg.
a. Determine the reaction forces on each of the four wheels
b. Determine the maximum weight that can be lifted without the crane tipping over.
Please draw free body diagram
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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- Determine the n- and t-components of the force F which is exerted by the rod AB on the crank OA. Evaluate your general expression for F = 90 N and (a) 0 = 29°, 3= 25° and (b) = 14°, 3 = 37° Answers: (a) Fn = (b) Fn = i i B BI A N, Ft= N, Ft= i N Narrow_forwardThe 1200-lb homogeneous block is placed on rollers and pushed up the 10 incline at constant speed. Determine the force P and the roller reactions at A and B.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 weightless bars AB and CE, together with the 5-lb weight BE, form a parallelogram linkage. The ideal spring attached to D has a free length of 2 in. and a stiffness of 7.5 lb/in. Find the two equilibrium positions that are in the range 0/2, and determine their stability. Neglect the weight of slider F.arrow_forwardA.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_forward- The unifom bar OC of lmgth L md mass (m) pivots freely about a horizontal axis through O. If the spring of modulusk is unstretched when C is coincident with A, detennine the tension T roquired to hold the bar in the position shown. The diameter of the small pulley at D| is negligible. L/2 L/2arrow_forward
- Each 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_forwardEach spring has an unstretched length of 2 mm and a stiffness of k = 350 N/m. Determine the stretch in OA spring required to hold the 25-kg crate in the equilibrium position shown. Determine the stretch in OB spring required to hold the 25-kg crate in the equilibrium position shown.arrow_forwardThe 15-lb bar BC is connected to a disk centered at A, and to a bar DC. If the disk is made to rotate at a constant speed of 180 rpm, determine the vertical components of the force exerted on bar BC at B and at C.arrow_forward
- Determine the force P required to maintain the 215-kg engine in the position for which θ = 28°. The diameter of the pulley at B is negligiblearrow_forwardBoth pulleys are fixed to the shaft and as the shaft turns with constant angular velocity, the power of pulley A is transmitted to pulley B. Determine the horizontal tension T in the belt on pulley B and the x, y, z components ofreaction at the journal bearing C and thrust bearing D if θ = 45°. The bearings are in proper alignment and exert only force reactions on the shaft.arrow_forward1- Determine equilibrium the angle 9 for and investigate the stability of the mechanism in this position. The spring has a stiffness of k = 1.5 kN/m and is unstretched when 8 = 90°. The block A has a mass of 40 kg as shown in Fig.1. Neglect the mass of the links. quin 450 mmarrow_forward
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