Question

An object with a mass of `6 kg` is on a plane with an incline of `- pi/6`. If it takes `18 N` to start pushing the object down the plane and `15 N` to keep pushing it, what are the coefficients of static and kinetic friction?

Answer 1

`mu_k=0.5`
`mu_s=0.6`

Explanation:

We have `mu_kxx6xx10xxsin (pi/6)=15`
`:.mu_k=1/2= 0.5`
Also
`mu_sxx6xx10xxsin (pi/6)=18`
`:.mu_s=0.6`