Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.200 and a charge of magnitude q. The balls are attracted to each other, and the threads attached to the balls make an angle of 20.0 with the vertical, as shown in the figure. http://i53.photobucket.com/albums/g45/xxdominisiaxx/Walker_19_71.jpg so the question is to Find the tension in each of the threads. okey, so i tried to figure this out. i was pretty sure i was getting this right, but no... 3. The attempt at a solution so i set each x,y component equal to 0. x=tsin20=0 y=tcos20-mg =0 so from the y i tried to get the tension which would be mg/cos20..and i am getting .0021.but its not the right answer. does anybody know what i am doing wrong...help would be greatly appreciated.