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homevolend
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Homework Statement
A boy pushes a light snow shovel at a uniform velo across a sidewalk. If the handle of the shovel is inclined at 55deg to a horizontal and he pushes along the handle with a force of 100N.
What is the coefficient of kinetic friction.
Homework Equations
Ff=?
Ff=Facos(-)
Fk=(micro)KFn
The Attempt at a Solution
I first found the force of friction which is Ff=100cos55
Ff= 57N
So now that I have 55N for Ff I did Fnet found.
Fnet= Fa-Ff
Fnet=43N
Fk=Fn
so Fk=43
So use this formula of
Fk=(micro)kFn
43=(micro)k43
43/43=1
But I know the kinetic friction is not 1 so how do I find the answer?