# How much work would it take to push a  8 kg  weight up a  2 m  plane that is at an incline of  pi / 4 ?

The component of downward acceleration due to gravity ($g$) along the inclined plane having angle of inclination $\frac{\pi}{4}$ is $= g \sin \left(\frac{\pi}{4}\right)$
So to push a mass of $m = 8 k g$ up a distance $d = 2 m$ along the plane the net work done will be
$w = m \times g \sin \left(\frac{\pi}{4}\right) \times d = 8 \times 9.8 \times \frac{1}{\sqrt{2}} \times 2 N = 110.87 N$