Engineering Mechanics: Dynamics (14th Edition)
14th Edition
ISBN: 9780133915389
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 17.3, Problem 42P
Determine the smallest acceleration that will cause the crate either to tip or slip relative to the cart. What is the magnitude of this acceleration? The coefficient of static friction between the crate and cart is μs = 0.5.
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The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static
friction between the 43-lb roller and the floor is Hs = 0.21, and the force Pis maximum so that the roller is about to slip, determine the
angular acceleration of the roller (in rad/s?). Assume the roller to be a uniform cylinder. Please pay attention: the numbers may change
since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 32.2 ft/s?.
1.5 ft
30°
The 20-lb block has friction coefficients of μ = 0.4
and = 0.35, with the inclined surface. Find
a. the angle where the 10-lb block begins to
slide
b. the acceleration of the block at the angle
where it first slides
c.
the acceleration of the block at an angle 10°
past the angle in b.
If you use cartesian coordinates with x-along the
slope, the problem is easier.
B
A
The man pushes on the roller with force P through a handle that connects to the
central axle of the roller. If the coefficient of static friction between the 43-lb roller
and the floor is ls = 0.12, and the force Pis maximum so that the roller is about to
slip, determine the angular acceleration of the roller (in rad/s²). Assume the roller to
be a uniform cylinder. Please pay attention: the numbers may change since they are
randomized. Your answer must include 2 places after the decimal point, and proper
unit. Take g = 32.2 ft/s2.
1.5 ft
30°
Your Answer:
Answer
Chapter 17 Solutions
Engineering Mechanics: Dynamics (14th Edition)
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