Physics · 2021
JEE Main · 17 March 2021, Shift 2 · Q9
A sphere of mass 2 kg and radius 0.5 m is rolling with an initial speed of 1 ms^-1 goes up an inclined plane which makes an angle of 30^° with the…
A sphere of mass $\displaystyle 2$ kg and radius $\displaystyle 0.5$ m is rolling with an initial speed of $\displaystyle 1 \mathrm{~ms}^{-1}$ goes up an inclined plane which makes an angle of $\displaystyle 30^{\circ}$ with the horizontal plane, without slipping. How long will the sphere take to return to the starting point A ?
Official answer
(2)
0.$\displaystyle 57$ s
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.