Two identical charged spheres suspended from a common point by two massless strings of lengths l are initially at a distance d (d ≪ l) apart because of mutual repulsion. The charges begin to leak from both spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between spheres as:
Physics · Electrostatic · Electric Charge & Coulomb’s Law
Two identical charged spheres suspended from a common point by two massless strings of lengths l are initially at a distance d (d ≪ l) apart because of mutual repulsion. The charges begin to leak from both spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between spheres as:
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