Question

A bar magnet passes through a wire coil as shown in the
figure. The acceleration of magnet is
(a) less than g (b) equal to g
(c) more than g (d) none of the above

Answer 1

Answer:

More than eqaul to G.......

Answer 2

you have drop a bar magnet through a coil so that it goes all the way through I was told the graph of emf induced in the coil vs time looks something like this:

enter image description here

(emf induced is on y axis, time is on x axis)

The area of the pink part and the blue part are equal (sorry that they don't look equal in my diagram)

I understand why the blue part looks more stretched than the pink part -- the magnet is accelerating. What I don't understand is the direction of the blue part -- it is opposite (negative) to the pink part (positive).