PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 17, Problem 6FP
To determine
The force developed in link
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4. The uniform slender rod has a mass m= 20 kg and length L = 0.5 m. As the frame accelerates forward the rod
is held in the position shown at a steady angle 0 = tan (3/4) by the stop at A. Determine the magnitude of the reaction force
at stop A if the acceleration is a = 6 m/s.
A =
a
L.
A
At the instant shown, link CD rotates with an angular velocity of W = 9.0 rad/s. If it is
subjected to a couple moment M= 320 N-m, determine the magnitude of the
vertical reaction force developed on pin D. The block has a mass of 50 kg and center
of mass at G. Neglect the mass of links AB and CD. (Hint, since the mass of link AB
or CD is negligible, the external force or moment acting on it sums up to 0.) Please
pay attention: the numbers may change since they are randomized. Your answer
must include 1 place after the decimal point, and proper unit. Take g = 9.81 m/s².
0.1 m
0.6 m
В
А
0.4 m'
G
0.4 m
D
C
M
Your Answer:
Answer
units
At the instant shown, link CD rotates with an angular velocity of @, = 8
rad/s. If link CD is subjected to a couple moment of M= 650 lb- ft, determine the
force developed in link AB and the angular acceleration of the links at this instant.
Neglect the weight of the links and the platform. The crate weighs 100 lb and is
fully secured on the platform.
1 ft
4 ft
@CD = 8 rad/s
M = 650 lb-ft
- 3 ft
Chapter 17 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
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- 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.arrow_forwardAt the instant shown, link CD rotates with an angular velocity of W = 9.5 rad/s. If it is subjected to a couple moment M = 560 N·m, determine the magnitude of the vertical reaction force developed on pin D. The block has a mass of 50 kg and center of mass at G. Neglect the mass of links AB and CD. (Hint, since the mass of link AB or CD is negligible, the external force or moment acting on it sums up to 0.) Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper unit. Take g = 9.81 m/s². 0.1 m 0.6 m 0.4 m 0.4 m G Your Answer: Answer B D O W units A Marrow_forwardThe vertical bar AB has a mass of 150 kg with center of mass G midway between the ends. The bar is elevated from rest at θ = 0 by means of the parallel links of negligible mass, with a constant couple M = 5 kN∙m applied to the lower link at C. Determine the angular acceleration α of the links as a function of θ and find the force B in the link DB at the instant when θ = 30°.arrow_forward
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