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Work Power and Energy question

2019 · 10 Jan · Shift 1 · Q69

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JEE Main
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Work Power and Energy
2019 · 10 Jan · Shift 1 · Q69

Work Power and Energy question

2019 · 10 Jan · Shift 1 · Q69

JEE MainPhysicsWork Power and EnergyMCQ+4 / −1

A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in figure. Work done by normal reaction on block in time is - JEE Main 2019 (Online) 10th January Morning Slot Physics - Work Power & Energy Question 104 English

JEE Main 2019 (Online) 10th January Morning Slot Physics - Work Power & Energy Question 104 English

A
${{m{g^2}{t^2}} \over 8}$
B
${{3m{g^2}{t^2}} \over 8}$
C
$-{{m{g^2}{t^2}} \over 8}$
D
0

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