Two small metallic spheres, each of mass m = 0.2 g, are suspended as pendulums by light strings of length L . The spheres are given the same electric charge of 7.2 nC, and they come to equilibrium when each string is at an angle of θ = 5˚ with the vertical. How long are the strings?

Two small metallic spheres, each of mass m = 0.2 g, are suspended as pendulums by light strings of length L . The spheres are given the same electric charge of 7.2 nC, and they come to equilibrium when each string is at an angle of θ = 5˚ with the vertical. How long are the strings?

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter2: Newtonian Mechanics-single Particle

Section: Chapter Questions

Problem 2.31P

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

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Two small metallic spheres, each of mass m = 0.2 g, are suspended
as pendulums by light strings of length L .
The spheres are given the same electric charge of 7.2 nC, and they
come to equilibrium when each string is at an angle of θ = 5˚ with
the vertical. How long are the strings?

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