Two hard rubber spheres, each of mass m = 13.8 g, arerubbed with fur on a dry day and are then suspended with twoinsulating strings of length L = 5.25 cm whose supportpoints are a distance d = 2.70 cm from each other as shownin the figure below. During the rubbing process, one spherereceives exactly twice the charge of the other. They are observedto hang at equilibrium, each at an angle of θ = 10.7° withthe vertical. Find the amount of charge on each sphere. (Assume thetwo spheres have charges q1 andq2 = 2q1)
