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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two identical metallic blocks resting on a frictionless horizontal surface are connected by a light metallic spring having a spring constant k and an unstretched length l n as shown in the figure . a total charges of q is slowely placed on the system , causing the soring to streached to an equilibrium length l as shown in figure. determine the value of Q, assuming that all the charges reside on the block and that block are like point charges.

Two identical metallic blocks resting on a frictionless horizontal surface are connected by a light metallic spring having a spring constant k and an unstretched length l n as shown in the figure . a total charges of q is slowely placed on the system , causing the soring to streached to an equilibrium length l as shown in figure. determine the value of Q, assuming that all the charges reside on the block and that block are like point charges.

Two large conducting spheres carrying charges Q1​ and Q2​ are brought close to each other. Is the magnitude of electrostatic force between them exactly given by Q1 ​Q2 ​/4πϵ0​r2 where r is the distance between their centres?