Answer Happy

(2.5 points) in class I showed a demonstration of magnetic braking. In this demonstration I had two strong magnets on either side of a stand and I allowed a pendulum with a square loop (length I on each side) to swing in between the magnetic field created by the two magnets. Assume the loop has mass m and resistance R and it enters the magnetic field at t=0. a. Find an expression for the loop's velocity as a function of time (recall, the loop accelerated to a stop). You can ignore gravity and focus on only the front edge of the loop (the back edge you can assume has not entered the magnetic field). le Л N N S N top down Vw. V