Question

The coefficient of friction on a surface is 0.25. A box requires 100N to slide it across the surface. What is the weight of the box?

Answer 1

So we know coefficient of f times normal force is friction. So do 100= .25 times x. Now solve for x. You get 400. So 400 is the normal force. And we know normal force equals weight in these types of problems so the answer is 400