Fundamentals of Physics Extended
10th Edition
ISBN: 9781118230725
Author: David Halliday, Robert Resnick, Jearl Walker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 6, Problem 10P
Figure 6-20 shows an initially stationary block of mass m on a floor. A force of magnitude 0.500mg is then applied at upward angle θ = 20°. What is the magnitude of the acceleration of the block across the floor if the friction coefficients are (a) µs = 0.600 and µk = 0.500 and (b) µs = 0.400 and µk = 0.300?
Figure 6-20 Problem 10.
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(m/s)
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Flg. 6-23 Problems 16 and 22.
17 In Fig. 6-24, a force P acts on a block weighing 45 N. The
block is initially at rest on a plane inclined at angle 0 15° to the
horizontal. The positive direction of the x axis is up the plane. The
coefficients of friction between block and plane are u,
u = 0.34. In unit-vector notation, what is the frictional force on
the block from the plane when P is (a) (-5.0 N)i, (b) (-8.0 N)i,
and (c) (-15 N)i?
0.50 and
0000
A 2.20 kg block is initially at rest on a horizontal surface. A horizontal force of magnitude 4.83 N and a vertical force are then applied to the block (Fig. 6-17). The coefficients of friction for the block and surface are µs = 0.4 and µk = 0.25. Determine the magnitude of the frictional force acting on the block if the magnitude of is (a) 8.00 N and (b) 12.0 N. (The upward pull is insufficient to move the block vertically.)
Chapter 6 Solutions
Fundamentals of Physics Extended
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