COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 88QAP
To determine
An expression for angle
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2-18. Determine the resultant of the parallel, coplanar force system shown in
Fig. P 2-18 and locate it with respect to point A.
100
300
200
6'
4'
FIG. P 2-18
II
70
0• One end of a uniform
meter stick is placed against a
vertical wall (Fig. P70). The
other end is held by a light-
weight cord that makes an
angle 0 with the stick. The
Figure P70
coefficient of static friction
between the end of the meter
- x -
stick and the wall is 0.40.
(a) What is the maximum value
the angle 0 can have if the stick
is to remain in equilibrium? (b) Let the angle 0 be 15°. A block of
the same weight as the meter stick is suspended from the stick, as
shown, at a distance x from the wall. What is the minimum value of
x for which the stick will remain in equilibrium? (c) When
15°, how large must the coefficient of static friction be so that
the block can be attached 10 cm from the left end of the stick with-
out causing it to slip?
8-105. A 10-kg cylinder D, which is attached to a small pulley B, is placed
on the cord as shown. Determine the largest angles so that the cord does
not slip over the peg at C. The cylinder at E also has a mass of 10 kg, and the
coefficient of static friction between the cord and the peg is μ = 0.1.
PROB. 8-105
A
0
B
D
0
E
Chapter 5 Solutions
COLLEGE PHYSICS
Ch. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAPCh. 5 - Prob. 5QAPCh. 5 - Prob. 6QAPCh. 5 - Prob. 7QAPCh. 5 - Prob. 8QAPCh. 5 - Prob. 9QAPCh. 5 - Prob. 10QAP
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