Physics Energy Spring?
A 66- kg gymnast stretches a vertical spring by 0.44 m when she hangs from it. The energy stored in the spring is 142.3J. If the spring is cut into two equal lengths, and the gymnast hangs from one section. In this case the spring stretches by 0.22 m. How much energy is stored in the spring this time?
- NCSLv 71 month ago
That the spring stretches by a different amount suggests to me that the spring is not "Hookean" -- it has no uniform stiffness coefficient. So I'll wager that half the stretch means half the energy, or about 71 J.