Concept explainers
The net torque on the system of rod plus charges.
Answer to Problem 72GP
The net torque on the system of rod plus charges is
Explanation of Solution
Given info:
Two point charge are
Mass is
Length of the rod is
The uniform electric field is
Formula used:
The electrostatic force acting on the 2 charges is,
Calculation:
The distance of each charge from the pivot point is
The torque caused by each force will be as follows.
Both the torques will tend to rotate the rod counterclockwise.
So, the net torque or moment of the couple will be ass follows.
Conclusion:
Thus, the net torque on the system of rod plus charges is
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