Question

1. As demonstrated in lecture, a Van de Graaff generator (VGG) is a machine that can separate charges on two different conductive spheres. It used a belt to transport electrons off of a large, conductive sphere. The electrons were moved to a different conductive sphere, creating a large potential difference between the two spheres. In other words, it is an electrostatic generator. If a person holds onto the large sphere while the VGG is active, s/he will lose electrons at the same rate as the sphere, until connection is broken. If a conductive metal disk is connected to an active VGG, the disk will lose electrons at the same rate as the sphere. Got it? A 60 kg person is standing on a thin, conductive disk (the person is wearing thick rubber shoes, so the person is electrically separate from the conductive disk). The disk is connected to a VGG and the person places a hand on an identical, but separate VGG. If each of the VGG are activated (turned on) at the same instant and both remove electrons at a rate 500 e− /s ,

determine:

(a) (15 points) the amount of time the person would have to hold onto the VGG to float 1 mm above the conductive disk;

(b) (10 points) the amount of mass that the person will gain or lose during this time. Did the person gain or lose this mass?

PLEASE ANSWER ALL PARTS AND LABEL THEM. THANK YOU

Answer 1