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Fig. shows a ball having a charge q fixe...

Fig. shows a ball having a charge q fixed at a point A. Two identical balls of mass m having charge `+q and -q` are attaached to the end of a light rod of length 2a. The system is released from the situation shown in fig. Find the angular velocity of the rod when the rod turns through `90^(@)`

A

`(sqrt(2)q)/(3piepsilon_(0)ma^(3))`

B

`(q)/(sqrt(3piepsilon_(0)ma^(3)))`

C

`(q)/(sqrt(6piepsilon_(0)ma^(3)))`

D

`(sqrt(2)q)/(sqrt(4piepsilon_(0)ma^(3)))`

Text Solution

Verified by Experts

The correct Answer is:
C
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