a horizontal force of 150N is used to push a 40kg packing crate a distance of 6m on a rough...
a horizontal force of 150N is used to push a 40kg packing crate a distance of 6m on a rough horizontal surface. if the crate moves at constant speed, find the workdone by the 150N force and the coefficient of kinetic friction between the crate and surface
Homework Answers
We know, work done = F x , where , F= force applied, x= distance moved.
now, F= 150 N, x= 6 m.
So , work done = 150 x 6 = 900 J
Now, as there is no acceleration , so , force applied=force of kinetic friction.
So, 150 N = force of kinetic friction = μmg = μ x 40 x 9.8
So, μ =150/(40 x 9.8) = 0.38
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