Physics · 2019
JEE Main · 10 January 2019, Shift 1 · Q5
A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in fig. Work done by normal reaction…
A block of mass $\displaystyle m$ is kept on a platform which starts from rest with constant acceleration g/$\displaystyle 2$ upward, as shown in fig. Work done by normal reaction on block in time t is :
Official answer
(1)
$\displaystyle \frac{3 \mathrm{~m} \mathrm{~g}^2 \mathrm{t}^2}{8}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.