posted by Dee .
A force of 12 N acts on an object of mass 10kg and moves it with a constant velocity across a floor. What is the coefficient of fiction between the object and the floor?
Since the object is not accelerating, the net force is zero and the friction force is 12N (backwards).
The (kinetic) friction force is therefore
mu = 12N/(M*g) = 12/98 = 0.1224