Physics, 05.12.2019 20:31 sugandiwoodbine
Workers pushing a 180 kg trunk across a level floor encounter a 10 m long region where the floor becomes increasingly rough; the coefficient of kinetic friction increases from Ī¼0 = .17 to .79 according to the expression ( Ī¼k = Ī¼0 + ax^2 ) where a = 0.00062 m^-2, and x is the distance in meters from the beginning of the rough region.
how much work does it take to push the trunk at constant speed across the region?
Answers: 1
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