A slingshot consists of a rubber strap attached to a y-shaped frame, with a small pouch at the center of the strap to hold a rock or other small projectile. The rubber strap behaves like a spring. Suppose that for a particular slingshot a spring constant of 600 N/m is measured for the rubber strap. The strap is pulled back approximately 40cm (.4m) prior to being released.
A) What is the potential energy of the system prior to release?
B) What is the maximum possible kinentic energy that can be gained after release?
C) If the rock has a mass of .05kg what is the maximum possible velocity after release?