COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 8, Problem 81QAP
To determine
The torque about the axis that passes through the bolt
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101. A 50.0-g meter stick is balanced at its midpoint
(50.0 cm). Then a 0.100-kg and a 0.200-kg mass are hung
with light string from the 10.0-cm and 70.0-cm points,
respectively. (Figure 8-59). Calculate the clockwise and coun-
terclockwise torques acting on the board due to the four
forces shown about an axis pointing out of the page at the
following points: (a) the 0-cm point, (b) the 50-cm point,
and (c) the 100-cm point. (d) Is the meter stick still balanced
after the two masses have been added? Example 8-17
10.0 cm
actuall
0.100 kg
Figure 8-59 Problem 101
F
pivot
50.0 cm
m
stick&
70.0 cm
0.200 kg
Fill in the Blanks
4 m
37°
R
Figure 8-61
Problem 58.
Type your answers in all of the blanks and submit
** A cylindrical bar with a sphere firmly attached to one end is originally at rest in a horizontal position. The bar is pivoted about
a free hinge at one end (Figure 8-61). The bar is 4.00 m long and has a mass of 231 kg. The sphere has a radius of 60.0 cm and a
mass of 53.0 kg. A variable torque is applied to lift the bar by rotating it 37.0° about the pivot at a constant angular speed. Calculate
the work done by the variable torque.
Type your answer here
kJ
Find the equivalent moment of force through point A of the force system shown in the figure.
100 lb
150 lb
120 lb
200 lb
2"
3
- 2
Chapter 8 Solutions
COLLEGE PHYSICS
Ch. 8 - Prob. 1QAPCh. 8 - Prob. 2QAPCh. 8 - Prob. 3QAPCh. 8 - Prob. 4QAPCh. 8 - Prob. 5QAPCh. 8 - Prob. 6QAPCh. 8 - Prob. 7QAPCh. 8 - Prob. 8QAPCh. 8 - Prob. 9QAPCh. 8 - Prob. 10QAP
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