Question

In the previous problem, if rod is rotated about an axis passing through its mid-point , the potential difference between the ends of rod is

Answer 1

Answer:

Answer is zero since potential energy is measured from centre of mass (which is at the mid point in this case) . The rod is hinged at the centre so the centre of mass wont move.

Answer 2

From the mid point of the rod the 2 ends would have same potential. So the potential difference between the 2 ends is 0.