PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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Chapter 19, Problem 27P
To determine
The speed of the container when
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1. If the cord is subjected to a horizontal force of P = 150N, and gear is supported by a fixed pin
at O, determine the angular velocity of the gear and the velocity of the 20-kg gear rack in 4 s,
starting from rest. The mass of the gear is 50-kg and it has a radius of gyration of ko = 125
mm. Assume that the contact surface between the gear rack and the horizontal plane is smooth.
75 mm
P = 150 N
150 mm
The pavement compactor is traveling down the incline at
VG = 5 ft/s when the motor is disengaged. The body of
the compactor, excluding the rollers, has a weight of
8000 lb and a center of gravity at G. Each of the two
rear rollers weighs 400 lb and has a radius of gyration of
KA = 3.3 ft. The front roller has a weight of 800 lb and
a radius of gyration of kg = 1.8 ft. The rollers do not
slip as they rotate.
(Figure 1)
Figure
3.8 ft
5 ft
A
GT
10 ft
1 of 1
30
730
▼
Part A
Determine the angular velocity of the roller B when the compactor has traveled 16 ft down the plane.
Express your answer in radians per second to three significant figures.
WB =
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The spring-held follower AB has a weight of 0.75 lb and moves
back and forth as its end rolls on the contoured surface of the
cam, where r=0.2 ft and z = (0.1sine) ft. If the cam is rotating at a
constant rate of 6 rad/s, determine the force at the end A of the
follower when e=90°. In this position the spring is compressed
0.4 ft. Neglect friction at the bearing C.
z = 0.1 sin 20
0.2 ft
e = 6 rad/s
k = 12 lb/ft
Fs
FA-
T
Chapter 19 Solutions
PEARSON ETEXT ENGINEERING MECH & STATS
Ch. 19 - The 60-kg wheel has a radius of gyration about its...Ch. 19 - Prob. 2FPCh. 19 - Prob. 3FPCh. 19 - Gears A and B of mass 10 kg and 50 kg have radii...Ch. 19 - The 50-kg spool is subjected to a horizontal force...Ch. 19 - Prob. 6FPCh. 19 - The rigid body (slab) has a mass m and rotates...Ch. 19 - Prob. 2PCh. 19 - Show that if a slab is rotating about a fixed axis...Ch. 19 - Prob. 21P
Ch. 19 - The two gears A and B have weights and radii of...Ch. 19 - The 30-kg gear is subjected to a force of P =...Ch. 19 - Prob. 27PCh. 19 - The turntable T of a record player has a mass of...Ch. 19 - The 10-g bullet having a velocity of 800 m/s is...Ch. 19 - Prob. 31PCh. 19 - Disk A has a weight of 20 lb. An inextensible...Ch. 19 - The 12-kg rod AB is pinned to the 40-kg disk. If...Ch. 19 - A thin rod of mass m has an angular velocity o...Ch. 19 - Prob. 41PCh. 19 - Prob. 42PCh. 19 - Prob. 44PCh. 19 - The 10-lb block is sliding on the smooth surface...Ch. 19 - Prob. 46PCh. 19 - The pendulum consists of a 15-kg solid ball and...Ch. 19 - Prob. 48PCh. 19 - The 20-kg disk strikes the step Without...Ch. 19 - The solid ball of mass m is dropped with a...Ch. 19 - Prob. 54PCh. 19 - Prob. 55PCh. 19 - Prob. 56PCh. 19 - Prob. 58PCh. 19 - The cable is subjected to a force of P = (10t2)...Ch. 19 - Prob. 2RPCh. 19 - The tire has a mass of 9 kg and a rad1us of...Ch. 19 - Prob. 4RPCh. 19 - The spool has a weight of 30 lb and a radius of...Ch. 19 - Prob. 6RPCh. 19 - Prob. 7RPCh. 19 - Prob. 8RP
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