1. The problem statement, all variables and given/known data Hello, this is my first time posting, I've run into a bit of a snag in my physics lab. I am to figure out the coefficient of friction based on the values we found in the lab. Now I found them out however I just want to be sure that im doing this right. these values were determined using a simple,horizontal pulley system that ran off the end of a table 2. Relevant equations F=MA coefficient of friction= Force of friction/force normal 3. The attempt at a solution So I have the weight on the table at 1,045g and the weight required to pull this weight towards the end of the table was 170g. I figured the force of friction was the mass of the pulley (170g) X the acceleration of Gravity, so F=170g X 9.8 m/s squared which came out to be 1666N Now the force normal i figured to be the same way. The weight on top of the table was 1,045g X 9.8m/s squared which came out to be 10241N so now I have the force of friction to be 1666N and the force normal to be 10241N I then used the coefficient of friction equation, 1666N/10241N which came out to be .16 So after all that my coefficient of friction was .16 Could anyone please tell me if I am doing this right? I believe I am but would like to be sure.