A block of mass m is kept on a platform which starts from rest with constant acceleration \(\frac{g}{2}\) upwards as shown in figure. Work done by normal reaction on block in time t is

A block of mass m is kept on a platform which starts from rest with co

1.	A block of mass m is kept on a platform which starts from rest with constant acceleration \(\frac{g}{2}\) upwards as shown in figure. Work done by normal reaction on block in time t is
A.	\(\frac{{m{g^2}{t^2}}}{8}\)
B.	\(\frac{{3m{g^2}{t^2}}}{8}\)
C.	0
D.	\(- \frac{{m{g^2}{t^2}}}{8}\)
Answer» C. 0

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A block of mass m is kept on a platform which starts from rest with constant acceleration \(\frac{g}{2}\) upwards as shown in figure. Work done by normal reaction on block in time t is

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