Physics
Electricity and Magnetism
A ring of radius R that lies in the horizontal

A ring of radius R that lies in the horizontal (xy) plane carries a charge Q uniformly

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A ring of radius R that lies in the horizontal (xy) plane carries a charge Q uniformly distributed over its length. A mass m carries a charge q whose sign is opposite that of Q.

(a) What is the minimum value of |q|/m such that the mass will be in equilibrium under the action of gravity and the electrostatic force on the charge q?

(b) If |q|/m is twice what is calculated in (a), where will the mass be when it is in equilibrium?

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a The minimum value of q m will be where the field due to the rin...View the full answer

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Question Posted: Jul 20, 2011 11:46 AM

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