Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
PROBLEM 16.59
The steel roll shown has a mass of 1200 kg, has a centriodal radius
of gyration of 150 mm, and is lifted by two cables looped around
its shaft. Knowing that at the instant shown the acceleration of the
roll is
2
150 mm/s
downward and that for each cable
3000 N,
A
T=
determine (a) the corresponding tension
,
B
T
(b) the angular
acceleration of the roll.
PROBLEM 16.60
A 15-ft beam weighing 500 lb is lowered by means of two
cables unwinding from overhead cranes. As the beam
approaches the ground, the crane operators apply brakes to slow
the unwinding motion. Knowing that the deceleration of cable A
is 20 ft/s2 and the deceleration of cable B is 2 ft/s2, determine
the tension in each cable.
PROBLEM 16.61
A 15-ft beam weighing 500 lb is lowered by means of two cables
unwinding from overhead cranes. As the beam approaches the
ground, the crane operators apply brakes to slow the unwinding
motion. Knowing that the deceleration of cable A is 20 ft/s2 and
the deceleration of cable B is
2
2 ft/s ,
determine the tension in each
cable.
PROBLEM 16.62
Two uniform cylinders, each of weight W = 14 lb and radius r = 5 in.,
are connected by a belt as shown. If the system is released from rest,
determine (a) the angular acceleration of each cylinder, (b) the tension
in the portion of belt connecting the two cylinders, (c) the velocity of the
center of the cylinder A after it has moved through 3 ft.
PROBLEM 16.62 (Continued)
PROBLEM 16.62 (Continued)
PROBLEM 16.63
A beam AB of mass m and of uniform cross section is suspended
from two springs as shown. If spring 2 breaks, determine at that
instant (a) the angular acceleration of the beam, (b) the
acceleration of point A, (c) the acceleration of point B.
PROBLEM 16.64
A beam AB of mass m and of uniform cross section is suspended
from two springs as shown. If spring 2 breaks, determine at that
instant (a) the angular acceleration of the beam, (b) the
acceleration of point A, (c) the acceleration of point B.
PROBLEM 16.65
A uniform slender bar AB of mass m is suspended from two springs
as shown. If spring 2 breaks, determine at that instant (a) the angular
acceleration of the bar, (b) the acceleration of point A, (c) the
acceleration of point B.
PROBLEM 16.65 (Continued)
