Bouncy Ball Lab – 1/10/14

In class, we had a lab in which we were to create a well proportioned mixture of polyvinalacetate(glue), and sodium borate(Borax), to create a bouncy ball with the best bounce-to-mass ratio. Over the course of an hour, we developed 4 different mixtures. We decided on changing the variable of the amount of borax,hoping it would give us a more rubber texture similar to that of a real “bouncey ball.” In the end, we decided on the mixture of 10g of glue, 2ml of Borax solution (15g of Borax /100ml of water). In our two final product balls, we colored them green and ended up with masses of 3g and 3.6g. They had an average bounce height of 44mm and 39mm respectively.CAM00576


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