
Concept explainers
(a)
The speed of orbiting particle.
(a)

Answer to Problem 60PQ
The speed of orbiting particle is
Explanation of Solution
Write an expression for the culoumb force.
Here,
Write an expression for the centripetal force.
Here,
The centripetal force and culoumb force are balances to keep the particle in motion.
Equate equation (I) and (II).
Rearrange equation (III) to find
Conclusion:
Substitute
Thus, the speed of orbiting particle is
(b)
Electric potential energy of the system.
(b)

Answer to Problem 60PQ
Electric potential energy of the system is
Explanation of Solution
Write an expression for the electric potential energy of the system.
Here,
Conclusion:
Substitute
Thus, the electric potential energy of the system is
(c)
Total energy of the system.
(c)

Answer to Problem 60PQ
The total energy of the system is
Explanation of Solution
Write an expression for the kinetic energy.
Here,
Write an expression for the total energy.
Here,
Conclusion:
Substitute
Substitute
Thus, the total energy of the system is
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Chapter 26 Solutions
EBK PHYSICS FOR SCIENTISTS AND ENGINEER
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