Error on a weighing scale due to wrong size

In summary, the conversation discusses the potential error in measurements when using a weighing scale with a tray that is smaller than the object being weighed. It is suggested to test with different shapes and directions to determine the exact error, but it is estimated to be zero in most cases.
  • #1
cloa513
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If you have say a 15 centimetre long piece of rigid plastic and the weighing scale's tray is only 10 centimetres, what is an estimate of the error that introduces in the measurement assuming the weight is still within normal parameters for the weighing scale. I was wondering what the approximate error in general for moderately rigid materials? It happens now and again at work.
 
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  • #2
I would expect zero, unless the overhanging part is resting on something or the weight distribution is so uneven it's tilting the pan.

What shape are the things you weigh? Can you hold them vertical somehow so they are fully within the pan? For example, if they are rod-shaped they could be placed horizontally across the top of a cup and then nearly-vertically in it. Then you could compare the measured weights with and without an overhang as a test. Remember to repeat each measurement a few times (take everything off the scale and put it back on) to check your precision.
 
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  • #3
Shape of things- plates.
 
  • #4
Hard for you to test, then. The answer is still zero.
 
  • #5
cloa513 said:
I was wondering what the approximate error in general for moderately rigid materials?
Experiment with a test item, offset and hanging over the pan in different directions. Then break it up and weigh it in the pan. How much variation do you see?
 
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Related to Error on a weighing scale due to wrong size

What is the error on a weighing scale due to wrong size?

The error on a weighing scale due to wrong size typically refers to inaccuracies that arise when the object being weighed is too large or improperly positioned, causing uneven distribution of weight and incorrect readings.

How does the size of an object affect the accuracy of a weighing scale?

The size of an object can affect the accuracy of a weighing scale because large objects may not fit entirely on the weighing platform, leading to an uneven weight distribution. This can cause the scale to register a weight that is either higher or lower than the actual weight.

Can the shape of an object cause errors on a weighing scale?

Yes, the shape of an object can cause errors on a weighing scale. Irregularly shaped objects may not sit evenly on the weighing platform, leading to uneven weight distribution and inaccurate readings.

How can I minimize errors when weighing large or irregularly shaped objects?

To minimize errors when weighing large or irregularly shaped objects, ensure that the entire object is placed centrally on the weighing platform. If the object is too large, consider using a larger scale or breaking the object into smaller parts and weighing them separately.

Are there specific types of scales designed to handle large or irregularly shaped objects?

Yes, there are specific types of scales designed to handle large or irregularly shaped objects. These include platform scales, floor scales, and industrial scales, which have larger and more robust platforms to accommodate such items accurately.

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