Question

uma mola de constante elastica 40 n/m sofre uma deformaçao de 0,04 m .calcule a energia potencial acumulada pela moto

Answer 1

Bom dia

Epe = k . x² / 2
Epe = 40 N/m . 0,04m² / 2
Epe =  0,032 N. m
Epe =  0,032J

Answer 2

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