. A 25.0 kg crate is placed on a concrete surface. If the coefficient of static friction is 0.60, how much horizontal force is needed to push the crate from rest? If it takes a horizontal force of 78 N to keep the crate moving at a constant velocity, what is the coefficient of kinetic friction?

. A 25.0 kg crate is placed on a concrete surface. If the coefficient of static friction is 0.60, how much horizontal force is needed to push the crate from rest? If it takes a horizontal force of 78 N to keep the crate moving at a constant velocity, what is the coefficient of kinetic friction?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity

Section: Chapter Questions

Problem 1CQ: Define normal force. What is its relationship to friction when friction behaves simply?

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1. A 25.0 kg crate is placed on a concrete surface. If the coefficient of static friction is 0.60, how much horizontal force is needed to push the crate from rest? If it takes a horizontal force of 78 N to keep the crate moving at a constant velocity, what is the coefficient of kinetic friction?

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