Coefficient of Kinetic Friction Question

[wilson_chem90]

1. If the acceleration of a pair of boxes has a magnitude of 2.5m/s^2, determine the smallest coefficient of friction between the boxes that will prevent slippage.

Homework Equations

F = ma
Fk = ukFn
Fw = mg

The Attempt at a Solution

ma = uk mg(Fn)
a = uk g
a/g = uk
2.5m/s^2 / 9.8m/s^2 = uk
uk = 0.25

 

[LowlyPion]

Since you don't want it to slip, it's really the coefficient of static friction you are interested in, but as to your solution, that looks like the right method.

 

[wilson_chem90]

oh okay, so its the same format just static friction?

 

[LowlyPion]

oh okay, so its the same format just static friction?

Correct.

μ_s not μ_k

No big deal.