- #1
kza62
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Homework Statement
A cart with a mass of 285 kg is pushed horizontally with a force of 1400 N. The acceleration of gravity is 9.8 m/s/s. The coefficient of friction (u) with the crate and the surface is 0.29. Calculate the acceleration of the crate.
Sooo given:
Fa: 1400 N
m: 285 kg
Fg: -9.8
u: 0.29
Ff: ?
Fn: ?
a: ?
Homework Equations
Fnet = ma
Ff = u * Fn
The Attempt at a Solution
Ok...
so if Fg is -9.8 then Fn is 9.8?
and then Ff = -(0.29)(9.8) which is -2.842?
so would Fnet = 1397.158 N?
and then do I use F = ma to find a?
so a = F/m which i got 4.9023
but the answer in the back of my textbook is 2.07028!
help please!