What+is+a+Balance

What is a Balance? How does it work? Pictures. ​
Contributed by Camila Tabilo:

"The Triple Beam Balance is a typical mechanical balance. It has a beam which is supported by a fulcrum. On one side is a pan on which the object is placed. On the other side, the beam is split into three parallel beams, each supporting one weight. In measuring the weight of an object, rather than adding additional weights, each of the three weights can be slid along the beam to increase their lever arm. It works just like a tetter-totter. If you have two people of unequal weight, the heavier person sits closer to the fulcrum to decrease their lever arm."

From: http://genchem.rutgers.edu/balance3b.html

Pictures: from: http://catskill-merino.com/images/gallery/w500/121388999076.15.9.2.jpg

from:http://valleyvintner.com/Merchant2/3bb.gif

from:http://genchem.rutgers.edu/balance3b.html

from: http://www.learningthings.com/mmLEARNINGTHINGS/Images/LER0897_100.gif

Contributed by Camila Tabilo

**CONTRIBUTED BY ALESSIA BONILLA: WHAT IS A BALANCE?**
​BALANCE : an instrument for weighing, esp. one that opposes equal weights, as in two matched shallow pans hanging from either end of a lever supported exactly in the middle; scales []

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[|http://www.benaim.org/leones%20imagenes/balanza.jp]

[|http://www.basculasbalanzas.com/instrumentos-][|de-medicion/balanza-de-roberval.jpg]


 * Contributed by: Juan Carlos Atala**