Here is the problem which I am struggling on, please help me!
Problem: Two resistance less rails rest 22cm apart on a 5.0?ramp. They are joined at the bottom by a 0.75 ohm resistor. At the top a copper bar of mass 0.040 kg (ignore its resistance) is laid across the rails. The whole apparatus is immersed in a vertical 0.85T field.
A- What is the terminal (steady) velocity of the bar as it slides frictionless down the rails?
I need expert help for the above problem.