A pendulum bob of mass 80mg and carrying a charge of 2 X 10-8 C is at rest in a uniform,horizontal electric field of 20kV/m . Find the tension in the string.
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62A pendulum bob of mass 80mg and carrying a charge of 2 X 10-8 C is at rest in a uniform,horizontal electric field of 20kV/m . Find the tension in the string.
This seems to be a relatively simple question
Did you draw the fbd?
What are the forces
mg and force due to electric field
they are perpendicular to each other
Now what is the resultant (The only other force acting? Is it tension?)
Thus the answer :)