1. The problem statement, all variables and given/known data A mass of 50 kg is kept in uniform motion along a horizontal surface by a horizontal force of 4.08x10^6 dynes. What is the coefficient of friction between surface and the mass? 2. Relevant equations (I searched previous answered questions and found this) Ff= u * mg 3. The attempt at a solution Our teacher hasn't actually started with our friction topic yet, but she always makes us do these assignments beforehand so we come "prepared" to her lectures. But I have no idea how to start. So I tried this, but I think it's incorrect. 4.08 x 10 ^ 6 dyn / (50 kg * 9.8 m/s^2) = 8326.531 Coefficients aren't supposed to be that big, right? So I tried converting. This is really embarrassing, but I'm not familiar with dyn so I had to look for its conversion factor to meters. 40.8 m / (50000 g * 9.8 m/s^2) = 8.32 x 10 ^-5 Even just clearing out the dyn thing would be great. I mean, if the values I used are correct? :) Thanks.