I've a test coming up in two days and have realized that i dont have many notes on this. i really only need help in setting up the question, but it would also be very helpful if you could work it through to the answer.

1. A force of 2N will stretch a rubber band 2cm:

A: Assuming that Hooke's law applies, how far will a 4N force stretch the rubber band?

B: How much work does it take to stretch the rubber band this far?

Thanks for any help in advance!