Atwood Machine: Is g = 9.8 m/s^2?

AI Thread Summary
In an Atwood machine experiment, the gravitational acceleration 'g' is expected to be close to 9.8 m/s². However, due to factors like the mass of the pulley and string, the experimental value of 'g' may be lower than the theoretical value. One participant reported calculating 'g' as approximately 7.1 m/s², confirming that experimental results will typically yield a value less than 9.8 m/s². This discrepancy highlights the influence of real-world variables on theoretical physics experiments. Understanding these factors is crucial for accurate experimental analysis.
curiousgeorge99
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Homework Statement


Simple question I'm sure, but I want clarification if possible. If you do an experiment with the Atwood machine and you need to calculate 'g', should it be close to 9.8 m/s^2 ?

Homework Equations



No equations necessary, theoretical question. I would think the Atwood machine is trying to demonstrate that g is actually 9.8m/s^2 ?

The Attempt at a Solution

 
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In reality, the pulley and string have mass, so the experimental acceleration will be less than the theoretical acceleration of the system
 
My 'g' is calculated to be about 7.1 m/s^2, so its good to know it should be less than 9.8.
 
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