Asked by Sam

What force must be applied to push a carton weighing 220 N up a 20° incline, if the coefficient of kinetic friction is 0.39? Assume the force is applied parallel to the incline and the velocity is constant

Answers

Answered by bobpursley
forces: friction down, pushing up, gravity down the plane.

weight down plane=mgsin20
friction down plane: mg*mu*cos20

pushingforce-mgsin20-mg*mu*cos20=ma=0

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