Van de graph

Today we played with the van de graff generator, what it basicially did was remove the negative electrolytes and it became neutral becausee the van de graph was positive and the "ball" was negative, but when you touch the ven de graf and it is positive and sonis another object, they both repel from each other.

Something that would be really cool to do on the van de graf is if a soda can , can shock agiasnt the generator, why because they arent both negative one is positive and the other is negative,or the other thing that we can probably donis to hold a beach ball on one hand and see if it will float just like with the ballon experiment we did in class the other day