Question

A spring with a spring constant of 4 N/m is stretched by Sarah's dog until extended by 2 m. How much elastic potential energy is stored by the spring?

Answer 1

Work is done when a spring is extended or compressed. Elastic potential energy is stored in the spring. Provided inelastic deformation has not happened, the work done is equal to the elastic potential energy stored.

The elastic potential energy stored can be calculated using the equation:

elastic potential energy = 0.5 × spring constant × (extension)2

This is when:

elastic potential energy (Ee) is measured in joules (J)

spring constant (k) is measured in newtons per metre (N/m)

extension (e), referring to the increase in length, is measured in metres (m)

here, I have answered your question!!

Answer 2

Answer:

.375

Explanation:

EPE = 1/2kx^2

EPE= (1/2)(3)(.5^2)

EPE = 0.375