bigmomma00 bigmomma00

09-09-2017
Chemistry

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describe how an equal-arm balance is made and how it works

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Adrian101 Adrian101

09-09-2017

Two pans of equal weight are suspended from the beam, one at each end, at the fulcrum (a type of lever). A pointer on the right angles to the beam and leaver indicates zero on a scale when the beam is at rest, parallel to a level surface.

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