Two small plastic balls with mass m, and 0. 7g hang from threads of negligible mass, as shown in Figure . Each ball has a charge of magnitude q, and 67 nC. The balls repel one another. The threads attached to the balls make an angle of 20° and 30º respectively with the vertical. a) Find mass m¡ and charge q1 b) Find the tension in each of the threads. /20º'30 91 67nC m1 0.7 g 3.5 ст

Two small plastic balls with mass m, and 0. 7g hang from threads of negligible mass, as shown in Figure . Each ball has a charge of magnitude q, and 67 nC. The balls repel one another. The threads attached to the balls make an angle of 20° and 30º respectively with the vertical. a) Find mass m¡ and charge q1 b) Find the tension in each of the threads. /20º'30 91 67nC m1 0.7 g 3.5 ст