(a) When you stretch a Slinky spring a moderate amount and then release it, it returns to its original state, and all the potential energy stored by the stretching is converted to another form. If you stretch too much, however, you can permanently bend the spring. Where does the stored potential energy go in this case?

(b) If you use pliers to carefully straighten the bent spring so that it looks the same as before, do you expect to recover the energy dissipated when you bent it?