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Plutonium88
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Homework Statement
A piano slides across a floor with a mass of 500kg.
A) solve for the normal force
B) A horizontal force 1300 is necessary to keep it in motion at constant speed find the coefficient of friction
Homework Equations
Fnet = MA
The Attempt at a Solution
Given: m= 500kg , fnetx=1300N
fnety= FN - FG = 0
Fn=Fg
FN=4900 N upward
b) fnetx = max = 1300N = -FFR
(i made my +x opposite the force of friction)
1300N = -FFR
1300 = mu*FN
mu = 1300/FN
mu = 1300/4900
mu= 0.265
Now a question arises...
I understand that ax must be 0 because it is at a constant velocity...
But I'm just curious because FFR = Fnetx
That means FFR= 1300N
So doesn't this mean that this unbalanced force will slow down the piano and not keep it at a constant motion? Anyways Yea i would appreciate some help please.