Physics · 2020
JEE Main · 2 September 2020, Shift 1 · Q5
A uniform cylinder of mass M and radius R is to be pulled over a step of height a ( a < R ) by applying a force F at its centre ' O ' perpendicular…
A uniform cylinder of mass M and radius $\displaystyle R$ is to be pulled over a step of height a ( $\displaystyle \mathrm{a}<\mathrm{R}$ ) by applying a force F at its centre ' O ' perpendicular to the plane through the axes of the cylinder on the edge of the step (see figure). The minimum value of F required is :
Official answer
(2)
$\displaystyle M g \sqrt{1-\left(\frac{R-a}{R}\right)^2}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.