Chelsea needs to move a 30kg box which is stationary on a wooden floor; the coefficients of friction between the box and the floor are u, = .42 (for static friction) and uk = .31 (for kinetic friction). (a) Chelsea pushes the box exerting a force to the right. Draw a free body diagram repre- senting all of the forces on the box. (b) What is the maximum force with which Chelsea could push without causing the box to begin accelerating? (c) Suppose the box begins moving. With what force would Chelsea have to push it to keep it moving at a constant velocity?
Chelsea needs to move a 30kg box which is stationary on a wooden floor; the coefficients of friction between the box and the floor are u, = .42 (for static friction) and uk = .31 (for kinetic friction). (a) Chelsea pushes the box exerting a force to the right. Draw a free body diagram repre- senting all of the forces on the box. (b) What is the maximum force with which Chelsea could push without causing the box to begin accelerating? (c) Suppose the box begins moving. With what force would Chelsea have to push it to keep it moving at a constant velocity?
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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Transcribed Image Text:Chelsea needs to move a 30kg box which is stationary on a wooden floor; the coefficients of
friction between the box and the floor are µ, = .42 (for static friction) and µk = .31 (for
kinetic friction).
(a) Chelsea pushes the box exerting a force to the right. Draw a free body diagram repre-
senting all of the forces on the box.
(b) What is the maximum force with which Chelsea could push without causing the box
to begin accelerating?
(c) Suppose the box begins moving. With what force would Chelsea have to push it to
keep it moving at a constant velocity?
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