Question

Two identically charged balls are separated by some distance r between their centers & exert some force F on each other. The balls are then pulled apart to create a new distance between their centers, 1.5 r. What will be the new force that the 2 balls exert on each other?

Answer 1

When two identically charged balls separated by distance r are pulled apart to a new distance of 1.5r, the new force they exert on each other is reduced to (4/9) times the original force F. This decrease in force occurs due to the inverse square relationship in Coulomb's law, where the force is inversely proportional to the square of the distance between the charges' centers. Thus, the new force is significantly weaker at 1.5r compared to the initial separation of r.