What is the equation to calculate thermal energy due to friction?

[Nerdydude101]

I have to calculate the amount of thermal energy due to friction, it will be rolling friction if that makes a difference but i would like to know how (if possible) to calculate thermal energy due to friction in sliding friction as well. Thank you!

 

[Simon Bridge]

The work against friction is the energy dissipated by the friction - but not all of it will go into heat.
Some may be sound, some may go in ablation of the surfaces, and so on.
So there is no simple calculation.