How Do You Find g Using Atwood's Machine?

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To find the value of g using Atwood's machine, one must measure the acceleration (a) of the system. The formula a = [(m2 - m1)g] / (m1 + m2) can be rearranged to solve for g once a is known. Acceleration can be determined by timing how long it takes for the masses to move a certain distance. Accurate measurement of both the masses (m1 and m2) and the acceleration is crucial for calculating g. This method effectively demonstrates the relationship between mass, acceleration, and gravitational force.
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Hi!
I have an assignment to write a mini-essay of sorts on Atwood's machine. One of the things I need to cover is how to find the value of g by using Atwood's machine. I really have no idea how to do this. I was thinking about rearranging a= [(m2-m1)g] / (m1+m2) but I don't understand how to get a.
Help would be greatly appreciated!
 
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blindsided said:
... but I don't understand how to get a.
If you are using this to find g, you'd have to measure the acceleration.
 
Ah, I understand now. Thank you!
 
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