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?

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Answer 1 · 2017-05-05T11:15:04

#mu_k=0.5#
#mu_s=0.6#

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