Question

uma mola de constante elastica 40n/m sofre uma deformação de 0,04m. calcula a energia potencial acumulada pela mola

Answer 1

F=K.X                                   F=40.0,04

K=40N/M                              F=1,6N    

X=0,04M

F=?                              

Answer 2

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