Question

Uma mola de constante elástica 40 N/m sofre uma deformação de 0,04 m . Calcule a energia potencial acumulada pela mola

Answer 1

$Epel = \frac{K.x^2}{2} \\ \\ Epel = \frac{40.16.10^{-4}}{2} \\ \\ Epel = 32.10^{-3}J$

Answer 2

$\Large{\begin{array}{l}\tt E_p=\dfrac{k\cdot x^2}{2}\\\\\tt E_p=\dfrac{40\cdot(0{,}04)^2}{2}\\\\\tt E_p=\dfrac{40\cdot0{,}0016}{2}\\\\\tt E_p=\dfrac{0{,}064}{2}\\\\\boxed{\boxed{\tt E_p=0{,}032\,J}}\end{array}}$