EP ENGR.MECH.:DYNAMICS-REV.MOD.MAS.ACC.
14th Edition
ISBN: 9780133976588
Author: HIBBELER
Publisher: PEARSON CO
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Chapter 19.2, Problem 3FP
If rod OA of negligible mass is subjected lo the couple moment M = 9 N · m, de1erm1ne the angular velocity of the 10 – kg inner gear t = 5 s after it starts from rest The gear has a rad1us of gyration about its mass center of kA = 100 mm, and it rolls on the fixed outer gear, B Motion occurs 10 the horizontal plane.
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The 15 kg pendulum shown has its mass
center at G and a radius of gyration about
its mass center of kG = 200 mm and was
released from rest when 0 = 0°.
Spring AB has a stiffness of k = 200 N/m
and is un-stretched when 0 = 90°.
The angular velocity of the pendulum in
rad/s at the instant 0 = 90° is:
-0.6 m-
а, 3.2
· b. 4.3 m
. с. 3.6
0.1 m
· d. 4.4
О е. 3.4
O f. 3.8
O g. 4.6
The 30-kg wheel has a radius of gyration about its center O of ko = 240 mm, and
radius r = 0.5 m. When the wheel is subjected to the constant force F = 388 N,
applied to the wheel's center axle at an angle = 6°, it starts rolling from rest.
Determine the total angular impulse L (in N•m.s) about the wheel's IC after 3.7
seconds if the wheel has been rolling without slipping. Please pay attention: the
numbers may change since they are randomized. Your answer must include 1 place
after the decimal point. Take g = 9.81 m/s².
Your Answer:
G
Answer
Ө
F
The 21-kg wheel has a radius of gyration about its center O of ko =260 mm, and
radius r = 0.5 m. When the wheel is subjected to the constant force F = 247 N,
applied to the wheel's center axle at an angle = 6°, it starts rolling from rest.
Determine the wheel's angular velocity W (in rad/s) after 4.0 seconds if the wheel
has been rolling without slipping. Please pay attention: the numbers may change
since they are randomized. Your answer must include 1 place after the decimal point.
Take g = 9.81 m/s².
Your Answer:
G
Answer
r
0
F
Chapter 19 Solutions
EP ENGR.MECH.:DYNAMICS-REV.MOD.MAS.ACC.
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