1.A dockworker loading crates on a ship finds that a 180 kg crate, initially at rest on a horizontal surface, requires a 450 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 420 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor. (a) the coefficient of static friction = and (b) the coefficient of kinetic friction = (2 marks) %3D

1.A dockworker loading crates on a ship finds that a 180 kg crate, initially at rest on a horizontal surface, requires a 450 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 420 N is required to keep it moving with a constant speed. Find the coefficients of static and kinetic friction between crate and floor. (a) the coefficient of static friction = and (b) the coefficient of kinetic friction = (2 marks) %3D

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

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 42P

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Similar questions

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