A 1080 N crate is being pulled across a level floor by a force F of 375 N at 25° above the horizontal. ?
The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate.
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Fcos(A) - uN = ma
N + Fsin(A) = W
N = W - Fsin(A)
Fcos(A) - u(W - Fsin(A)) = ma = Wa/g
F(cos(A) + usin(A)) - uW = Wa/g
F(cos(A) + usin(A))/W - u = a/g
a = g(F(cos(A) + usin(A))/W - u)
a = 10(375(cos(25) + 0.25sin(25))/1080 - 0.25)
a = 1.014 m/s^2