An object with a mass of #3 kg# is on a plane with an incline of # - pi/8 #. If it takes #15 N# to start pushing the object down the plane and #2 N# to keep pushing it, what are the coefficients of static and kinetic friction?

1 Answer
Sunayan S
Jul 17, 2017

See below.

Explanation:

In case os static friction:
#mu_smgcostheta=15#
#=>mu_s=15/(3×10×0.9#
#=>mu_s=0.5#
In case of kinetic friction:
#mu_kmgcostheta=2#
#mu_k=0.07#(Ans)
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