What Are the Frictional Forces in a Modified Atwood's Machine Experiment?

AI Thread Summary
The discussion revolves around calculating static and kinetic friction in a modified Atwood's machine experiment. The user has obtained a static mass of 360g and a kinetic mass of 250g, with a 1 kg mass on the table. They seek clarification on the expressions for frictional force and normal reaction, using the equation ΣFy = FN - FG = 0 to find FN. The user is uncertain about their calculations, particularly regarding the acceleration due to gravity and the coefficient of static friction. The conversation emphasizes the need for clear expressions and calculations related to frictional forces in the experiment.
krazy19812
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Hey guys, I am having a little brain fart here, any help? Easy stuff

Im trying to find the static and kinetic friction of an object on a certain surface. We used a modified atwood's machine and got the following results:

Static mass required: 360g
Kinetic mass required: 250g

The mass on the table was 1 kg.

Can someone help me out? and i would love to see some work also..
 
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Also here is some spitballing i have been doing

\SigmaFy=F_{N}-F_{G}=0
=> F_{N}=F_{G}= ma

I got 9.8m/s^{2}? not sure if that's right
 
Can you write down the expression for the frictional force?
 
rl.bhat said:
Can you write down the expression for the frictional force?

\mu_{s}ma

i believe it is where mu sub s is the static coefficient
 
Mass is on the table and weight is hanging. Is it so?
In the given problem, what is the frictional force? And what is the normal reaction?
 

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