A 28 kg steel block sits on a lubricated steel floor.  What is the maximum amount of static friction (in newtons) that can appear if a horizontal force is applied to the box.

College Physics
11th Edition
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Chapter1: Units, Trigonometry. And Vectors
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A 28 kg steel block sits on a lubricated steel floor.  What is the maximum amount of static friction (in newtons) that can appear if a horizontal force is applied to the box.

Table 5.1 Coefficients of Friction (u)
Material
Static Friction
Kinetic Friction
Steel on steel
0.58
0.20
Steel on steel (lubricated)
0.13
0.13
Glass on glass
0.95
0.40
Hardwood on hardwood
0.40
0.25
Steel on concrete
0.30
Aluminum on aluminum
1.9
Rubber on dry concrete
2.0
1.0
Rubber on wet concrete
1.5
0.97
Aluminum on wet snow
0.4
0.02
Steel on Teflon
0.04
0.04
Transcribed Image Text:Table 5.1 Coefficients of Friction (u) Material Static Friction Kinetic Friction Steel on steel 0.58 0.20 Steel on steel (lubricated) 0.13 0.13 Glass on glass 0.95 0.40 Hardwood on hardwood 0.40 0.25 Steel on concrete 0.30 Aluminum on aluminum 1.9 Rubber on dry concrete 2.0 1.0 Rubber on wet concrete 1.5 0.97 Aluminum on wet snow 0.4 0.02 Steel on Teflon 0.04 0.04
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