PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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The steel ingot has a mass of 1940 kg. It travels along the conveyor at a speed v= 0,2
m/s when it collides with the "nested" spring assembly. If the stiffness of the outer
spring is Ka= 5 kN/m, determine the required stiffness Kb of the inner spring so that the
motion of the ingot is stopped at the moment the front, C, of the ingot is 0.3 m from the
wall. (Answer in kN/m)
0.5 m
-0.45 m
kB k
B
None
The small car, which has a mass of 21.7 kg, rolls freely on the horizontal track and carries the 4.4-kg sphere mounted on the light
rotating rod with r = 0.56 m. A geared motor drive maintains a constant angular speed 0 = 2.8 rad/s of the rod. If the car has a velocity v
= 0.45 m/s when 0 = 0, calculate v when = 53°. Neglect the mass of the wheels and any friction.
Answer: When 8 = 53°, v = i
m/s
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