Answer :

Given,


Length of strings,


Distance between suspension points,


Magnitude of charge on each ball,


Distance between the two balls,


Let the mass of each ball be m. Let the magnitude of Tension be T and the electric force between the balls be Fe.


To be in accordance with the fact, , the balls must be attracted to each other. Hence, they are oppositely charged.



By trigonometry,




At equilibrium, all forces must cancel out in accordance with newton’s first law. Hence,



___________________________________________________


Formula used:


By Coulomb’s law, the electric force is given by:



Where ϵ0 is the permittivity of free space


q1 and q2 are the magnitude of charges


r is the distance of separation between the charges


(Here, )


___________________________________________________


The magnitude of the electric force, Fe is given by:



Substituting values in (3), we get



From equation (1), we get




From equation (2), we get




Hence, mass of each of the balls is 8.2 grams and Tension in each of the ropes is 0.08N.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

(a) Describe briePhysics - Board Papers

Repeat the previoHC Verma - Concepts of Physics Part 2

There is another Physics - Exemplar

Does the charge gPhysics - Board Papers