PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 17, Problem 60P
The tent rod has a mass of 2 kg/m. If it is released from rest in the position shown, determine its initial angular acceleration and the horizontal and vertical components of reaction at A.
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2) The shown spool has a mass of 450 kg and a
radius of gyration k. =1.2m. It rests on the
surface of conveyer belt for which the coefficient of
friction u = 0.5. If the conveyer accelerates
at 1.2m/ S²and the spools rolls without slipping,
determine the tension in the wire and the angular
acceleration of the spool
0.8 m
1.6 m
ac
The flat circular disk rotates about a vertical axis through O with a slowly increasing angular velocity w. Prior to rotation, each of the
0.52-kg sliding blocks has the position x = 28 mm with no force in its attached spring. Each spring has a stiffness of 430 N/m.
Determine the value of x for each spring for a steady speed of 279 rev/min. Also calculate the normal force N exerted by the side of the
slot on the block. The force N is positive if it pushes from the side labeled A. Neglect any friction between the blocks and the slots, and
neglect the mass of the springs. (Hint: Sum forces along and normal to the slot.)
Answers:
X =
wwwwwwww
N =
i
i
-74-74-
mm
mm
mm
N
The small end rollers of the 8-lb uniform slender bar (length = 4 ft) are constrained to move in the slots, which lie in the verticalplane. At the instant when θ = 30°, the velocity of roller A is 14 ft/s down the vertical slot. Determine the angular acceleration of the bar, the acceleration of mass center G, and the reactions of points A and B, under the action of the 6-lb force P. Neglect the friction and the mass of the small rollers.
Chapter 17 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
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