The discussion revolves around the calculation of the electromotive force (emf) induced in a rotating rod with mass, exploring concepts related to torque and current in the context of rotational motion.
Participants are actively engaging with each other's posts, seeking clarification on the concepts of torque balance and the definitions of terms like emf and torque. Some have expressed uncertainty about their progress and are looking for guidance on how to proceed further.
There is an ongoing discussion about the assumptions related to external torques and the conditions for the rod's rotation, with participants attempting to clarify the definitions and relationships between the various physical quantities involved.
it means that there is not external torque that is torque of mg is balanced by torque of induced current.kuruman said:
i have shown how much i have proceeded far.Now i cannot do it further.kuruman said:
And where is the equation that says that? Parenthetically, there are two external torques. What you meant to say is that there is no net torque. Right? This is a torque balance problem. What does one normally do with such problems? Hint: Free body diagram.Physics lover said:
ok i think i got that.The emf to be find out will have its own torque =IBL which will balance the torque of mg and induced current.Am i right?kuruman said:
You are right except that IBL is a force, not a torque.Physics lover said: