Not sure where to start

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Homework Statement


A 8 kg box is initially traveling on a horizontal surface at a speed of 11 m/s and comes to rest after 46 meters due to the force of friction. If the coefficient of static friction is 1.21 times more than the coefficient of the kinetic friction, what is the minimum horizontal force needed in Newtons in order to move the box again?


Homework Equations


i drew out all my forces but not sure where to go from here


The Attempt at a Solution


All i found so fare was the Fn=78.48
 
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Answers and Replies

  • #2
LowlyPion
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Homework Statement


A 8 kg box is initially traveling on a horizontal surface at a speed of 11 m/s and comes to rest after 46 meters due to the force of friction. If the coefficient of static friction is 1.21 times more than the coefficient of the kinetic friction, what is the minimum horizontal force needed in Newtons in order to move the box again?


Homework Equations


i drew out all my forces but not sure where to go from here


The Attempt at a Solution

Welcome to PF.

You need to first determine the force that the kinetic friction induced to slow it down.

Knowing that, you can determine the u of kinetic friction and then to figure the u of static friction that you can use to figure the force that needs to be overcome again.
 

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