A woman exerts a horizontal force of 115 N on a crate with a mass of 32.2 kg.   (a) If the crate doesn't move, what's the magnitude of the static friction force (in N)?   (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? (Assume the crate remains stationary.)

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 40PQ: A sleigh is being pulled horizontally by a train of horses at a constant speed of 8.05 m/s. The...
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A woman exerts a horizontal force of 115 N on a crate with a mass of 32.2 kg.
 
(a)
If the crate doesn't move, what's the magnitude of the static friction force (in N)?
 
(b)
What is the minimum possible value of the coefficient of static friction between the crate and the floor? (Assume the crate remains stationary.)
 
 
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