HW Ch. 3-4

# HW Ch. 3-4 - The horizontal steel shaft weights 620 lb and...

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The horizontal steel shaft weights 620 lb and is sus- pended by a vertical cable from A and by a second cable BC which lies in a vertical transverse plane and loops underneath the shaft. Calculate the ten- sions ?1 andT2in the cables. An* T1: 155 lb' Tz:26Olb 6', Problem 3/65

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I 70 Determine the compression in each of the three legs of the tripod subjected to the vertical 2-kN force. The weight of the legs is negligible compared with the applied load. Solve by using the force-equilibrium equation XF : 0. F=2kN D 50! - >". - -rg10 \ ;itu< Problem 5/7O
l/75 The mass center of the 30-kg door is in the center o{ the panel. Ifthe weight ofthe door is supported en- tirely by the lower hinge A, calculate the magnitude of the total force supported by the hinge at B. Ans. B: 190.2 lt so-,,,2 l'----' Problem 5/75

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l/79 The 480-lb V-8 engine is supported on an engine stand and rotated 90o from its upright position so that its center ofgravity G is in the position shown. Determine the vertical reaction at each roller ofthe stand. Neglect the weight of the stand itself. Ans. Na: 2821b, Ns : 34.8 lb, Nc 162.8 Ib Problem 3/79
5/86 The shaft, Iever, and handle are welded together and constitute a single rigid body. Their combined mass is 28 kg with mass center at G. The assembly is mounted in bearings A and B, and rotation is pre- vented by link CD. Determine the forces exerted on the shaft by bearings A atd, B while the 30-N.m couple is applied to the handle as shown. Would these forces change if the couple were applied to the shaft AB rather than to the handle? Problem 5/86

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HW Ch. 3-4 - The horizontal steel shaft weights 620 lb and...

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