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Work Energy And Power - Mechanics - Physics Previous Year Questions
Practice Work Energy And Power - Mechanics - Physics previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| RE-NEET 2026 | 2026 | 1 | View paper |
All Work Energy And Power previous year questions
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2026 · Physics · Mechanics · Work Energy And Power
RE-NEET 2026
A particle of mass $M$ moves along a horizontal $x$ axis from $x=0$ to $x=L$. The coefficient of kinetic friction varies as a function of $x$ as $\mu_k(x)=\mu_0-\alpha x$, where $\mu_0$, $\alpha$ are constants of appropriate dimensions, so that $\mu_k(L)=0$. The total work done by the frictional force during the motion is $n \mu_0 M g L$, where $g$ is the acceleration due to gravity. The value of $n$ is: