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JEE Main 2019
10-01-2019 S1
Question
A block of mass $m$ is kept on a platform which starts from rest with constant acceleration $\frac{g}{2}$ upward, as shown in fig. Work done by normal reaction on block in time $t$ is
Select the correct option:
A
$\frac{3 m g^2 t^2}{8}$
B
$\frac{\mathrm{mg}^2 \mathrm{t}^2}{8}$
D
$\frac{\mathrm{m} \mathrm{g}^2 \mathrm{t}^2}{8}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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Physics
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