A 18kg crate is pushed across the floor, using a force that makes an angle of 21° with the horizontal. The coefficient of static friction between crate and floor is us 0.45. The coefficient of kinetic friction between crate and floor is uk = 0.20. a) What magnitude of pushing force is required to just start the crate sliding? b) Once it has started sliding, if you continue to push the crate with the same amount of force found in "a", what will its acceleration be? %3D

A 18kg crate is pushed across the floor, using a force that makes an angle of 21° with the horizontal. The coefficient of static friction between crate and floor is us 0.45. The coefficient of kinetic friction between crate and floor is uk = 0.20. a) What magnitude of pushing force is required to just start the crate sliding? b) Once it has started sliding, if you continue to push the crate with the same amount of force found in "a", what will its acceleration be? %3D

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 43P: A rocket sled accelerates at a rate of 49.0m/s2 . Its passenger has a mass of 75.0 kg. (a) Calculate...

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