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davo
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Homework Statement
ok so box 1 (5kg) is ontop of box 2 (10kg) and this guy has to pull the box with an unknown force, but the boxes are on a pulley conected to a wall (not a celling).
The coefficient of static friction between the box and the floor is .9. The coefficient of kinetic friction between the box and the floor is .7. The coefficient of static friction between the boxes is .7. The coefficient of kinetic friction between the boxes is .5. (2 points)
Homework Equations
Last week in class my teacher gave us all some equations.
Ffs=Ms*Fn
Ffk=Mk*Fn
Where Ffs and Ffk is friction do to static and kanetic, Fn is friction normal.
but i don't rember what M is, is it somthing as simple as mass?
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