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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman
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A 5.00-kg box sits at rest at the bottom of a ramp that is

Chapter 8, Problem 64P

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QUESTION:

A 5.00-kg box sits at rest at the bottom of a ramp that is 8.00 m long and that is inclined at 30.0° above the horizontal. The coefficient of kinetic friction is ???k = 0.40 and the coefficient or static friction is ???s = 0.50. What constant force ?F?, applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 4.00 s?

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QUESTION:

A 5.00-kg box sits at rest at the bottom of a ramp that is 8.00 m long and that is inclined at 30.0° above the horizontal. The coefficient of kinetic friction is ???k = 0.40 and the coefficient or static friction is ???s = 0.50. What constant force ?F?, applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 4.00 s?

ANSWER:

Solution 64P Step 1: Figure 1 represents the condition of the box moving in an inclined plane. Provided, = 30°, m = 5 kg, t = 4 s, and = 0.40. We know that, g = 9.8 m/s 2 k

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