What happens when a rectangular loop is dropped into a field of uniform, magnetic field B extending to infinity? The loop has a mass m and its resistance is R. It has length L, breadth b, L tending to infinity. Gravity is present in downward direction. The loop is dropped such that emf is induced across one breadth. Emf induced = Bvb Current = Bvb/R. Force net = mg - Bvb*b*B/R accn = dv/dt = g - B^2vb^2/mR Integrating an expression in log is obtained which does not match the reqd answer given in a book. Is the method correct?