how will you now know whether the the weights and balance used to measure weight is correct or not
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Answer:
A balance is considered to be true if its beam remains horizontal when equal weights or no weights are placed on the two pans. It is possible when the arms of the two balances are of equal length, the weights of two pans should be equal.
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Explanation:
Weigh two objects together.
Place one object on the scale. Note the weight. Take it off and let the scale even back out. ...
If it matches, the scale is accurate. If it doesn't, try it again and see if it is off by the same number. If it is, it might be that your scale is always off by that amount.
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