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Old 15th Mar 2020, 6:03 am   #9
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 4,540
Default Re: Cassette torque measurement.

Which reminds me of a little question I thought up years ago, and which none of the physics teachers at school could answer correctly :

Both torque and work have the same dimensions, a force times a distance. (In SI units, both are Nm (newton metres)). But while it is correct to use the joule as a unit of work, it is incorrect to use it as a unit of torque. What is the fundamental difference between the way torque and work are calculated?
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