Question

Uma mola de constante elástica 10 N/m sofre uma deformação de 3 m. Calcule a energia potencial elástica acumulada pela mola.

Answer 1

K=10N/m
X=3m

Epe=K.X²/2
Epe=10.3²/2
Epe=10.9/2
Epe=90/2
Epe=45J

Answer 2

$\Large{\begin{array}{l}\tt E_p=\dfrac{k\cdot x^2}{2}\\\\\tt E_p=\dfrac{10\cdot3^2}{2}\\\\\tt E_p=\dfrac{10\cdot9}{2}\\\\\tt E_p=\dfrac{90}{2}\\\\\boxed{\boxed{\tt E_p=45\,J}}\end{array}}$