Answer:
The leaves of a charged electroscope rise to a certain angle and no farther due to the balance between electrical repulsion and gravitational force acting on them. When a charged object is brought near the electroscope, it induces a charge separation, causing the leaves to become charged and repel each other. As they repel, they move apart, reaching a point where the electrostatic repulsion between them is equal to the gravitational force pulling them downward. At this equilibrium point, the leaves stop rising, maintaining a stable angle indicative of the strength of the charge present.
Step-by-step explanation: