Physics · 2018
JEE Main · 15 April 2018, Shift 2 · Q3
A body of mass 2 kg slides down with an acceleration of 3 m / s^2 on a rough inclined plane having a slope of 30°. The external force required to…
A body of mass $\displaystyle 2$ kg slides down with an acceleration of $\displaystyle 3 \mathrm{~m} / \mathrm{s}^2$ on a rough inclined plane having a slope of $\displaystyle 30$°. The external force required to take the same body up the plane with the same acceleration will be : $\displaystyle \left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\right)$
Official answer
(2)
$\displaystyle 20$ N
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JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.