Engineering Mechanics: Dynamics (14th Edition)
14th Edition
ISBN: 9780133915389
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 15.4, Problem 93P
If they are sliding on a smooth horizontal plane with the velocities shown, determine their speedsjust after impact. The coefficient of restitution between them is e = 0.8.
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The two bodies have the masses and initial velocities shown in the figure. The coefficient of restitution for the collision is e = 0.58, and
friction is negligible. If the time duration of the collision is 0.015 s, determine the magnitude of the average impact force which is
exerted on the 4.5-kg body.
0.41 m/s
0.51 m/s
4.5 kg
5.6 kg
Answer: Fave*
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Q14. In the image below, disk A and disk B are approaching each other, and they
have a mass of mA = 1.7 kg and må 1.5 kg, respectively. The directions of their
initial velocities, as well as the plane of contact, are shown in the image, and the
speeds are VÃ,1 = 3.8 m/s and v³,1 = 2.4 m/s. If the coefficient of restitution between
the balls is e = 0.2, determine the speed of disk A after collision. Please pay
attention: the numbers may change since they are randomized. Your answer must
include 3 places after the decimal point, and proper Sl unit.
y
VB,1
Your Answer:
Answer
B
VA.1
units
=
A
3
5
·X
Chapter 15 Solutions
Engineering Mechanics: Dynamics (14th Edition)
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