COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 78QAP
To determine
(a)
The time required by the car to accelerate from rest to a speed of 26.8 m/s, when the
To determine
(b)
How friction can accelerate the car forwards, since it opposes motion.
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71 SSM Figure 5-60 shows a box of dirty money (mass m = 3.0 kg)
on a frictionless plane inclined at angle 6, = 30°. The box is con-
nected via a cord of negligible mass to a box of laundered money
(mass m; = 2.0 kg) on a frictionless plane inclined at angle Oz = 60°.
The pulley is frictionless and has negligible mass. What is the ten-
sion in the cord?
Figure 5-60 Problem 71.
71 SSM Figure 5-60 shows a box of dirty money (mass m, = 3.0 kg)
on a frictionless plane inclined at angle 0 = 30°. The box is con-
nected via a cord of negligible mass to a box of laundered money
(mass m2 = 2.0 kg) on a frictionless plane inclined at angle 0, = 60°.
The pulley is frictionless and has negligible mass. What is the ten-
sion in the cord?
%3D
M1
M2
Figure 5-60 Problem 71.
To avoid a collision while traveling at a speed of 19 m/sec and descending a steep mountain pass with a grade of 4.3%, a truck locks up all wheels and skids to a stop over a distance of 90 meters. Determine the coefficient of friction between the truck tires and pavement.
Chapter 5 Solutions
COLLEGE PHYSICS
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