How to weigh an object that's heavier than the max. weight of the spring scale

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SUMMARY

To weigh an object exceeding the 25N limit of a spring scale, users can utilize additional equipment such as a second spring scale or a balance setup. Attaching another spring scale allows for the distribution of weight, enabling measurement without exceeding the maximum capacity. Alternatively, constructing a balance with a known 25N weight can facilitate the measurement of heavier objects by only measuring the difference in force. These methods leverage principles of force distribution and balance to accurately determine the weight of heavier objects.

PREREQUISITES
  • Understanding of basic physics concepts, particularly force and weight.
  • Familiarity with spring scales and their limitations.
  • Knowledge of balance principles in physics.
  • Experience with measuring equipment and their configurations.
NEXT STEPS
  • Research techniques for using multiple spring scales in tandem.
  • Learn about constructing a balance scale for precise weight measurement.
  • Explore the principles of force distribution in mechanical systems.
  • Investigate high precision balances and their operational mechanisms.
USEFUL FOR

Physics students, engineers, and anyone involved in experimental design or weight measurement who needs to accurately weigh objects exceeding standard scale limits.

krosenberg
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Homework Statement


suppose that a spring is used in a spring scale that is limited to a maximum value of 25N, but you would like to weigh an object of mass M that weighs more than 25N.
What commonly available equipment, along with the spring scale, can be used to determine the weight of the object without breaking the scale?

The Attempt at a Solution


I have a feeling that attaching another spring to the scale would work, but I don't know how to explain why, and how i would then determine the weight of the >25N object.

Any suggestions?
 
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Depends how you were planing to attach the other scale.
Forget scales for a moment and imagine you had a rope with a breaking strain of 1Ton and you needed to lift 1.5T, does it become obvious how to attach two ropes? How much force would be on each rope ?
How does this translate to the scales?

Another approach would be to build a balance with another 25N weight - then arrannge it so the scale only measures the difference. This is actually how high precision balances work.
 

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