- #1
Kingbaldur
- 10
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Homework Statement
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 I am doing this right. these values were determined using a simple,horizontal pulley system that ran off the end of a tableHomework Equations
F=MA
coefficient of friction= Force of friction/force normal
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.