Dynamics: Kinetic Friction

Question

The force of friction between an object and the surface upon which it is sliding is 16N and the coefficient of friction between them is 0.68. What is the weight of the object?

Answer 1

F_F = μN where F_F is the force due to friction, μ is the coefficient of friction, and N is the normal force (which for a flat surface will be equal to its weight).

So 16 = (0.68)N or N = 16/0.68 = 23.53 N

So the weight is 23 N (rounded to 2 sig figs)