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Object positioning on scale

  1. Dec 28, 2007 #1
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    Hello

    We've got an object on a scale and we are measuring it's weight. Does the positioning of this object on the scale influence the measured weight?
    Notice how the sides of the object overflow the scale in diagram . Will the scale show a different (smaller) weight?

    The scale and the object is the same in both diagrams. And the scale is perfect in terms of accuracy and function.

    Thanks
     

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    Last edited: Dec 28, 2007
  2. jcsd
  3. Dec 28, 2007 #2

    mgb_phys

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    In theory it shouldn't matter and doesn't with good scales.
    With cheap bathroom type scales it might make a difference because they bend easily, they also read wrongly if placed on carpet or an uneven surface for the same reason.
     
  4. Dec 28, 2007 #3
    The COG is in the center of the scale, so you should never see any difference. However, this time of year, when I overhang the scale, I notice my weight seems to be up not down.
     
  5. Dec 28, 2007 #4

    mgb_phys

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    A trick I learnt from the Simpsons is to rest your stomach on the washbasin
     
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