Elastic potential energy

From Wikipedia, the free encyclopedia

You have new messages (last change).

The elastic potential energy is the potential energy of a string or spring that has elasticity. For a spring of natural length, l, and modulus of elasticity λ under an extension of x it can be calculated using the formula:

E = \frac{\lambda x^2}{2l}

This formula is obtained from the integral of Hooke's law:

U_e = \int {k x}\, dx = \frac {1} {2} k x^2

The equation is often used in calculations of positions of mechanical equilibrium.

Elastic Potential Energy is the kind of energy that is stored in a bow, or in a catapult, or in a spring.

The energy stored = the work done to stretch the bow, so:

Elastic Energy (joules) = Average Force (newtons) x Distance (meters)

Retrieved from "http://en.wikipedia.org../../../e/l/a/Elastic_potential_energy.html"
In other languages