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

Net work done in sliding a body up to a height $h$ on inclined plane $\begin{array}{r}=\text{ Work done against gravitational force }\\ +\text{ Work done against frictional force }\end{array}$ $\Rightarrow W=W_g+W_f$ ...(i) but $W=300\mathrm{J}$ $W_g=mgh=2\times 10\times 10=200\mathrm{J}$ Putting in Eq. (i), we get $\begin{array}{c}\\ 300=200+W_f\\ \Rightarrow W_f=300-200=100\mathrm{J}\end{array}$