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

Given, the mass of the object$=10 \text{k}\text{g}$

Initial velocity (rest),$u=0$

Final velocity,$v=10 {\text{m s}}^{-1}$

$g=10 {\text{m s}}^{-2}$

From work-energy theorem
$\mathit{\text{mgh}}+{\mathit{\text{W}}}_{\mathrm{a}\mathrm{i}\mathrm{r}}=\frac{1}{2}{\mathit{\text{mV}}}^2-\frac{1}{2}{\mathit{\text{mu}}}^2$

$10\times 10\times 10+{\mathit{\text{W}}}_{\mathrm{a}\mathrm{i}\mathrm{r}}=\frac{1}{2}10\times {10}^2-0$

${\mathit{\text{W}}}_{\mathrm{a}\mathrm{i}\mathrm{r}}=-500 \text{J}$