Engineering Mechanics: Dynamics (14th Edition)
14th Edition
ISBN: 9780133915389
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 15.4, Problem 84P
If it rebounds at an angle φ and the coefficient of kinetic friction is μ, determine the coefficient of restitution e. Neglect the size of the ball. Hint: Show that during impact, the average impulses in the x and y directions are related by Ix, = μIy. Since the time of impact is the same, Fx ∆t = μFy ∆t or Fx = μFy.
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Block A has a mass of 3 kg and is sliding on a rough horizontal surface with a velocity (VA)1
2.0 m/s when it makes a direct collision with block B, which has a mass of 2 kg and is
originally at rest. If the collision is perfectly elastic (e = 1), determine the distance between
the blocks when they stop sliding. The coefficient of kinetic friction between the blocks
and the plane is μ = 0.20.
Give your answer in metres (m) with three decimal places of precision.
(VA)1
A
B
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Compute the final velocities v1' and v2' after collision of the two cylinders which slide on the smooth horizontal shaft. The velocities are positive if to the right, negative if to the left. The coefficient of restitution is e = 0.83.Assime v1 = 27 ft/sec, v2= 4 ft/sec, W1 = 6 lb, W2 = 16 lb.
Q1:
Two smooth disks A and B, having mass of 1 kg and 2 kg respectively, collide with the velocities shown. If the coefficient of restitution for the disks is e = 0.75, determine the x and y
components of the final velocity of each disk just after collision.
(VB) =1 m/s
= 45°
8 = 30
Line of impact
(VA) = 3 m/s
Plane of contact
Chapter 15 Solutions
Engineering Mechanics: Dynamics (14th Edition)
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