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?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 22P: The systems shown in Figure P4.22 are in equilibrium. If the spring scales are calibrated in...

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