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?
