Calculating % Error on Atwood's Machine Lab

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SUMMARY

The discussion focuses on calculating the percentage error in an Atwood's Machine lab experiment, where the calculated gravity was 7.09 m/s² instead of the accepted value of 9.81 m/s². The formula for percentage error is clarified as the absolute value of the difference between the accepted value and the experimental value, divided by the accepted value, multiplied by 100. The correct formula is expressed as: |(9.81 - 7.09) / 9.81| × 100. This highlights the importance of precision in experimental measurements and the impact of human error.

PREREQUISITES
  • Understanding of basic physics concepts, specifically gravity.
  • Familiarity with the Atwood's Machine apparatus.
  • Basic knowledge of percentage calculations.
  • Experience with experimental error analysis.
NEXT STEPS
  • Research the principles of experimental error analysis in physics.
  • Learn how to conduct experiments using Atwood's Machine effectively.
  • Study the impact of human error on experimental results.
  • Explore advanced techniques for measuring gravitational acceleration accurately.
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Students in physics labs, educators teaching experimental methods, and anyone interested in improving accuracy in scientific measurements.

blimkie
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hi all
im doing a lab on the atwoods machine basically i ahve calulated gravity as eqaul to 7.09 m/s^2 so i am way off because tis really 9.81. its because of human error when i was using the stop watch.
i can't rember the formula for figuring out the perecentage of error even tho its really simple lol:smile:
its sumthing like 9.81 - 7. 09 then u multply or divive to get ur percentage
haha thanks
 
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http://www2.volstate.edu/tfarris/PHYS2110-2120/experimental_error_files/image002.gif

Dont forget to take the absolute value of the numerator.
 
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thanks a lot
 

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