Is a 100 kg Cotton Bag Heavier than a 100 kg Iron Bar?

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SUMMARY

The discussion centers on the comparison of a 100 kg cotton bag and a 100 kg iron bar, both measured on a weighing machine. Participants clarify that when using a NIST traceable weighing machine, both objects would weigh the same, as the machine accounts for environmental factors. The conversation emphasizes the importance of accurate measurement standards and the role of correction factors in determining true weight.

PREREQUISITES
  • NIST traceable weighing machines
  • Understanding of mass vs. weight
  • Knowledge of measurement correction factors
  • Basic principles of physics related to buoyancy and density
NEXT STEPS
  • Research the specifications and calibration methods of NIST traceable weighing machines
  • Learn about the principles of mass and weight in physics
  • Explore measurement correction factors in various environments
  • Investigate the effects of buoyancy on weight measurements
USEFUL FOR

This discussion is beneficial for physicists, quality control professionals, and anyone involved in precise measurement and weighing processes.

DrChem
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you have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. in reality, one is heavier than the other. can you say which one is heavier and why?
 
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Is there an atmosphere permeating the weighing machine?
 


"can you say which one is heavier and why? "

If I were using a NIST traceable weighing machine, I'd use the standard correction for the effect you're thinking of and neither would be heavier.
 

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