Physics - W.E.P. Question with Solution | TestHub

$W=\frac{1}{2}k\left(x_2^2-x_1^2\right)$

$W=\frac{1}{2}\times 800\left[{\left(15\times 10^{-2}\right)}^2-{\left(5\times 10^{-2}\right)}^2\right]$

$W= 400 \times 200 \times {10}^{–4} = 8 \mathrm{J}$