A slingshot consists of a light leather cup, containing astone, that is pulled back against two parallel rubber bands. Ittakes a force of 15 N to stretch either one of these bands 1.0cm.
(a) What is the potential energy stored in the two bands togetherwhen a 50-g stone is placed in the cup and pulled back 0.20 m fromthe equilibrium position?
(b) With what speed does the stone leave the slingshot?