Problem 223. Two small metal balls of mass m 0.1 g are suspended at the same point by insulating threads of length 1= = 30 cm. One of the balls is loaded with twice as much electric charge as the other. Pushing the balls towards each other by insulating materials, we move them to a position where hoth threads make an angle of a = 20° with the vertical, and the threads remain in a common vertical plane. After releasing the two balls from this position at the same time, the angle between the two Qd 8 20 threads reaches the largest value of 3=84°. Determine the charge of the balls.

Problem 223. Two small metal balls of mass m 0.1 g are suspended at the same point by insulating threads of length 1= = 30 cm. One of the balls is loaded with twice as much electric charge as the other. Pushing the balls towards each other by insulating materials, we move them to a position where hoth threads make an angle of a = 20° with the vertical, and the threads remain in a common vertical plane. After releasing the two balls from this position at the same time, the angle between the two Qd 8 20 threads reaches the largest value of 3=84°. Determine the charge of the balls.