A 72.7 kg steel box is being pushed along the concrete ground. It goes from zero to a speed of 41.7 m/s in 7.5 s. How hard (in newtons) is the box being pushed? Use the coefficient values found in Table 5.1 from your text (page 133). Table 5.1 Coefficients of Friction (u)MaterialStatic FrictionKinetic FrictionSteel on steel0.580.20Steel on steel (lubricated)0.130.13Glass on glass0.950.40Hardwood on hardwood0.400.25Steel on concrete0.30Aluminum on aluminum1.9Rubber on dry concrete2.01.0Rubber on wet concrete1.50.97Aluminum on wet snow0.40.02Steel on Teflon0.040.04

mass of steel box = 72.7 kg Initial velocity =0 m/s Final velocity = 41.7 m/s time taken = 7.5…

Answered: A 72.7 kg steel box is being pushed…

A 72.7 kg steel box is being pushed along the concrete ground. It goes from zero to a speed of 41.7 m/s in 7.5 s. How hard (in newtons) is the box being pushed?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A 72.7 kg steel box is being pushed along the concrete ground. It goes from zero to a speed of 41.7 m/s in 7.5 s. How hard (in newtons) is the box being pushed? Use the coefficient values found in Table 5.1 from your text (page 133).

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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