A bar of negligible resistance and mass m in the figure below is pulled horizontally across frictionless parallel rails, also of negligible re- sistance, by a massless string that passes over an ideal pulley and is attached to a suspended mass M. The uniform magnetic field has a magni- tude B, and the distance between the rails is â. The rails are connected at one end by a load resistor R.The acceleration of gravity is g.
A bar of negligible resistance and mass m in the figure below is pulled horizontally across frictionless parallel rails, also of negligible resistance, by a massless string that passes over an ideal pulley and is attached to a suspended mass M. The uniform magnetic field has a magnitude B, and the distance between the rails is l. The rails are connected at one end by a load resistor R.The acceleration of gravity is g. What is the magnitude of the terminal velocity (i.e., the eventual steady-state speed V infinity) reach by the bar?
