PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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The 250-N block rests upon a level plane for which fk = 0.2. It is pulled by force P = 100N inclined at 20o with the horizontal. If the 100-N pull is then removed, find the distance the block will travel.
When the 0.05 kg body is in the position shown, the linearspring is stretched 10 mm. Determine the force P requiredto break contact at C.
30°-
50 mm
-20 mm-
10 mm
The operation of the fuel pump for an automobile depends on the reciprocating action of the rocker arm ABC, which is pinned at B and is spring loaded at A and D.
The vertical force acting on the rocker arm at A is FA
= 50N, and at C it is Fc = 150N.
When the smooth cam C is in the position shown, determine the magnitude of the force at B
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- 1. The cord AB has a length of 5 m and is attached to the end B of the spring having a stiffness k = 10 N/m. The other end of the spring is attached to a roller C so that the spring remains horizontal as it stretches. If a 10 N weight is suspended from B, determine the necessary un-stretched length of the spring, so that = 40° for equilibrium. 5 m 5 m 5 m- www k = 10 N/marrow_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_forwardDraw the Free-Body Diagram if the weight acts on point Garrow_forward
- Both 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 = 0°. The bearings are in proper alignment and exert only force reactions on the shaft.arrow_forwardIf 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.arrow_forward= The smooth pin P has a mass of 80 g. It is attached to an elastic cord extending from 0 to P and, due to the slotted arm guide, moves along the horizontal circular path r = (0.8 sin ) m. If the cord has a stiffness k 30 kN/m and an unstretched length of 0.25 m, determine the force of the guide and the normal force of the circular path on the pin when 0 = 60°. The guide has a constant angular velocity è = 5 rad/s. T P ė = 5 rad/s 0.arrow_forward
- The chain binder is used to secure loads of logs, lumber, pipe, and the like. If the tension T₁ is 2.7 kN when 0= 29°, 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 = 90 mm, b = 550 mm. FO T₁ B A Answers: P= i T₂³ i KN KN T₂arrow_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_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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