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## Main Question or Discussion Point

For my physics practical coursework I investigated how the rate of revolution of the permanent magnet in an eddy-current speedometer affects the turning force induced in the metal cup or plate.

I got the results I expected, and I am required to prove them using appropriate equations and calulations. Does anyone have any idea of which equations are relevent to this application?

Any help would be greatly appreciated!

I got the results I expected, and I am required to prove them using appropriate equations and calulations. Does anyone have any idea of which equations are relevent to this application?

Any help would be greatly appreciated!