Question

A particular spring has a spring constant of 25 N/m.

Calculate the energy stored when the spring is extended by 15 mm.
Give your answer in standard form, to 3 significant figures.

Answer 1

2.8×10^-3

`e.p.e = (1)/(2) k {x}^(2) \\ = (1)/(2) * 25 * (0.015m)^(2) \\ = 0.0028125`

0.0028125N