Question
Two identical charged spheres suspended from a common point by two massless strings of length l are initially a distance d(d < < l) apart because of their mutual repulsion. The charge begins to leak from both the spheres at a constant rate.As a result the charges approach each other with a velocity v. Then as a function of distance x between them
-
v ∝ x-1
-
v ∝ x1/2
-
v ∝ x
-
v ∝ x-1/2
Solution
D.
v ∝ x-1/2
