Two identical small non conducting balls are charged by rubbing against each other. They are suspend
Two identical small non conducting balls are charged by
rubbing against each other. They are suspended from ceiling
rod through two strings oflength L = 20 cm each. The separation
between the suspension points being d = 5 cm. In equilibrium
the separation between the balls is r = 3 cm. Find the mass m of
each ball and the tension in the strings. The charge on each ball
has magnitude 2 x 10-s C.