A rubber cord is suspended from a fixed support. A weight attached to its lower end is slowly increased from zero, and then slowly decreased back to zero. The force-extension curve for contraction lies below the force-extension curve for stretching. What does the shaded region between the curves represent?
- Athe amount of elastic energy stored in the rubber
- Bthe amount of thermal energy dissipated in the rubber
- Cthe work done on the rubber cord during stretching
- Dthe work done by the rubber cord during contraction