1. Martha is pushing a 35 kg chair across the floor. The coefficients of fre chair and floor are µs 0.70 and µk = 0.40. %3D a) How hard does she need to push horizontally to just start the chair moving? b) If she applies this same force once it is moving, what is the resulting acceleration? Draw the free-body diagram for this situation.

1. Martha is pushing a 35 kg chair across the floor. The coefficients of fre chair and floor are µs 0.70 and µk = 0.40. %3D a) How hard does she need to push horizontally to just start the chair moving? b) If she applies this same force once it is moving, what is the resulting acceleration? Draw the free-body diagram for this situation.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 78PQ: Two children, Raffi and John, sitting on sleds tied together with a massless rope, are being dragged...

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