Two identical small charged spheres, each having a mass of 3X10^-2kg, hang at equilbrium. The length of the string is .2m, the angle between each string and the perpendicular is 10 degress. A=.034M© BrainMass Inc. brainmass.com September 23, 2018, 11:36 pm ad1c9bdddf - https://brainmass.com/physics/electric/two-small-charged-spheres-hang-equilibrium-tension-force-9735
Because, angle of the string with the vertical (Q) = 10 degree
here, read Q as theta.
In horizontal direction:
Fe = T*sin(Q)
(where T is the tension in the string and Fe is the electric force between two charges)
Fe = ...
The solution analyzes two small charged spheres to hang at equilibrium. The tension, force and charge of each sphere is computed. With good explanations and calculations, the problems are solved.