Two identical small charged spheres, each having a mass m, hang in equilibrium the length of each string is l, and the angle made by any string with the vertical is `theta`. Find the magnitude of the charge on each sphere.

Explanation

To solve the problem of finding the magnitude of the charge on each of the two identical small charged spheres hanging in equilibrium, we can follow these steps:

### Step 1: Understand the Setup
We have two identical small charged spheres, each with mass \( m \), hanging from strings of length \( l \). The strings make an angle \( \theta \) with the vertical. The spheres are charged and repel each other due to electrostatic forces.

### Step 2: Identify Forces Acting on the Spheres
Each sphere experiences three forces:
1. The gravitational force acting downward: \( F_g = mg \)
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