PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 22, Problem 41P
If the block-and-spring model is subjected to the periodic force F=F0 cos ωt, show that the differential equation of motion is ẍ + (k/m)x = (F0/m) cos ωt , where x is measured from the equilibrium position of the block. What is the general solution of this equation?
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I
Draw the free-body diagrams and write the differential equations of motion for
the two masses in terms of x₁ and .x2.
b. Find x₁, and X20, the constant displacements of the masses caused by the gravita-
tional forces when fa(t) = 0 and when the system is in static equilibrium.
K₁
Rewrite the system equations in terms of z₁ and 22, the relative displacements of
the masses with respect to the static-equilibrium positions found in part (b).
K₂
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M₂
fa(1)
M₁
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Figure P2.15
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Figure P2.16
2.16. Repeat all three parts of Problem 2.15 for the system shown in Figure P2.16. Each of
the three springs has the same spring constant K.
Determine the equivalent
torsional spring constant of a
spring that will represent the
system such that this torsional
spring will be located at where
the given bar turns. k=5N/m
and l=1.5meters (answer in N-
m) *
4 =
k = k
kz = 2k
k3 = 3k
F x
len
Determine the equivalent torsional spring constant of a spring that will represent the system such that this torsional spring will be located at where the given bar turns. k=5N/m and l=1.5meters (answer in N-m)
Chapter 22 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
Ch. 22 - A spring is stretched 175 mm by an 8-kg block. If...Ch. 22 - A spring has a stiffness of 800 N/m. If a 2-kg...Ch. 22 - Prob. 3PCh. 22 - Prob. 4PCh. 22 - Prob. 5PCh. 22 - Prob. 6PCh. 22 - Prob. 7PCh. 22 - Prob. 8PCh. 22 - A 3-kg block is suspended from a spring having a...Ch. 22 - Prob. 10P
Ch. 22 - Prob. 13PCh. 22 - Prob. 14PCh. 22 - Prob. 16PCh. 22 - Prob. 17PCh. 22 - A uniform board is supported on two wheels which...Ch. 22 - Prob. 24PCh. 22 - Prob. 30PCh. 22 - Prob. 31PCh. 22 - Prob. 32PCh. 22 - Determine the differential equation of motion of...Ch. 22 - Prob. 36PCh. 22 - If the block-and-spring model is subjected to the...Ch. 22 - A block which has a mass m is suspended from a...Ch. 22 - A 4-lb weight is attached to a spring having a...Ch. 22 - A 4-kg block is suspended from a spring that has a...Ch. 22 - A 5-kg block is suspended from a spring having a...Ch. 22 - Prob. 48PCh. 22 - The light elastic rod supports a 4-kg sphere. When...Ch. 22 - Find the differential equation for small...Ch. 22 - Prob. 52PCh. 22 - The fan has a mass of 25 kg and is fixed to the...Ch. 22 - In Prob. 22-53 , determine the amplitude of...Ch. 22 - Prob. 55PCh. 22 - Prob. 56PCh. 22 - Prob. 57PCh. 22 - Prob. 58PCh. 22 - Prob. 59PCh. 22 - Prob. 60PCh. 22 - Prob. 61PCh. 22 - Prob. 62PCh. 22 - Prob. 65PCh. 22 - Determine the magnification factor of the block,...Ch. 22 - Prob. 67PCh. 22 - The 200-lb electric motor is fastened to the...Ch. 22 - Prob. 70PCh. 22 - Prob. 72PCh. 22 - Prob. 73PCh. 22 - Prob. 74PCh. 22 - Prob. 75PCh. 22 - Prob. 76PCh. 22 - Prob. 79P
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