PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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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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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.
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.
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- Q4 / Determine the unstretched length (Lo) of spring Ac if a force P= 400 N causes the Ø=60° for equilibrium cord AB is 0.6m long . Take K=850 N/m. As shown in fig (4)? 0.6 m 0.6 m wwwarrow_forwardThe 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.arrow_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 = 0°. The bearings are in proper alignment and exert only force reactions on the shaft.arrow_forward
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