A force of 4 N will stretch a rubber band 0.04m. Assuming that Hooke's Law applies, how far will an 8-N force stretch the rubber band? How much work does it take to stretch the rubber band this far?
the forumla shows f=kx if force increase extension also increases from the first given you can know the k value and it is =100 and if u divide f by k u get 0.08