F = mu m g
75 = mu (20)(9.8)
solve for static mu
60 = mu m g
60 = mu (20)(9.8)
solve for kinetic mu
A 20 kg sled rests on a horizontal surface. if it takes 75 N to start the sled in motion and 60 N to keep it moving at a constant speed, what are the coefficients of static and kinetic friction respectively?
explain please
2 answers
thanks!