Mastering Physics: Homework #10 (phy 111) Adaptive Follow Google Chrome https://

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Mastering Physics: Homework #10 (phy 111) Adaptive Follow Google Chrome https:// mastering physics.com 55375585 &offset; next Session PHY 11 Fall 2015 Help Close Signed i Homework 10 (phy 111 Ada ve Follo Problem 5.33 Resources previous I em 2 l next question set Problem 5.33 The coefficient of kinetic friction between a 90 kg crate and the warehouse floor is of the corresponding coefficient of static friction. 70 The crate falls off a fork that is moving at 2 m/s and then slides along the warehouse floor for a distance of 3.5 m before coming to rest. Part A What is the coefficient of static friction between the crate and the floor? Express your answer to one significant figure Submit My Answers Give U Continue Provide Feedback

Explanation / Answer

Use equation,

Change in KE = Work done by frictional force

KE= Wf

1/2mv^2 = uk*mg*d

1/2v^2 = uk*g*d

½*2^2 = uk*9.8*3.5         =>   uk = 0.0583

uk= 70%*us

uk= 0.70*us

us= uk/0.7 = 0.0583/0.7 = 0.083

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