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A charge + Q is uniformly distributed over a thin ring with radius R. A negative point charge – Q and mass m starts from rest at a point far away from the centre of the ring and moves towards the centre. Find the velocity of this particle at the moment it passes through the centre of the ring.

A charge + Q is uniformly distributed over a thin ring with radius R. A negative point charge – Q and
mass m starts from rest at a point far away from the centre of the ring and moves towards the centre.
Find the velocity of this particle at the moment it passes through the centre of the ring.

Grade:11

3 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
9 years ago
Draw the figure .
See we find the force by whole ring at a point where distance of point is x from the center.
Center is our origin here.
|Work done|=gain in KE

Arun Kumar
IIT Delhi
Askiitians Faculty
moidin afsan
20 Points
9 years ago
thank uuuuuuu
moidin afsan
20 Points
9 years ago
how did dx come ????? pls ans
 

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