How Does a Rotating Metallic Bar Generate a Potential Difference?

[DaTario]

rotating metalic bar and potential difference

Hi All,

I have been thinking of this lately and had no answer.

Consider we have a metalic bar rotating around one of its ends. Centrifugal force will appear inside the bar. It seems natural to think that electrons will suffer larger displacements than protons. Thus a potential difference seems to arise. If all this is correct, what do we need (complementary information, for instance) in order to calculate the potential difference from:

the length L
the mass
the volumetric density
the resistance
the angular velocity.

?

Best wishes

DaTario

 

[saunderson]

i don't know what you mean with ddp.

Despite i suggest that you take a look at the experiment which Richard Tolman conducted in 1916. That would have led you in the right direction.

 

[DaTario]

i don't know what you mean with ddp.

Sorry, I used a portuguese shortage for potential difference (Diferença De Potencial). I have it corrected now in the OP.

Thank you ( I will search for this reference Tolman).

Best Wishes

DaTario

 

[DaTario]

Despite i suggest that you take a look at the experiment which Richard Tolman conducted in 1916. That would have led you in the right direction.

Thank you.

Nice reference.

Best Wishes


DaTario