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A block of mass \( m \) is stationary with respect to a rough wedge as shown in figure. Starting from rest in time \( t,\left(m=1 \mathrm{~kg}, \theta=30^{\circ}, a=2 \mathrm{~m} / \mathrm{s}^{2}, t=4 \mathrm{~s}\right) \) work done on block
\begin{tabular}{|l|l|l|l|}
\hline \multicolumn{3}{|c|}{ Column-I } & \multicolumn{2}{c|}{ Column-II } \\
\hline (A) & By gravity & (P) & \( 144 \mathrm{~J} \) \\
\hline (B) & By normal reaction & (Q) & \( 32 \mathrm{~J} \) \\
\hline (C) & By friction & (R) & \( 56 \mathrm{~J} \) \\
\hline (D) & By all the forces & (S) & \( 48 \mathrm{~J} \) \\
\hline \multicolumn{2}{|c|}{ A B C D } & (T) & None \\
\cline { 2 - 5 } &
\end{tabular}
P
W
(1) \( \begin{array}{lllll}\mathrm{T} & \mathrm{P} & \mathrm{Q} & \mathrm{S}\end{array} \)
(2) \( \begin{array}{llll}\mathrm{T} & \mathrm{S} & \mathrm{T} & \mathrm{Q}\end{array} \)
(3) \( \begin{array}{llll}\mathrm{T} & \mathrm{Q} & \mathrm{S} & \mathrm{P}\end{array} \)
(4) \( \begin{array}{lllll}\mathrm{T} & \mathrm{P} & \mathrm{S} & \mathrm{Q}\end{array} \)


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