Physics · 2019
NEET 2019 · 5 May · Code P1 · Q9
A disc of radius 2 m and mass 100 kg rolls on a horizontal floor. Its centre of mass has speed of 20 cm / s. How much work is needed to stop it?
A disc of radius $\displaystyle 2$ m and mass $\displaystyle 100$ kg rolls on a horizontal floor. Its centre of mass has speed of $\displaystyle 20 \mathrm{~cm} / \mathrm{s}$. How much work is needed to stop it ?
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 3$ J
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NEET (UG) 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.