In the given diagram, the block of mass \( 2 \mathrm{~kg} \) and \( 3 \mathrm{~kg} \) are placed....

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In the given diagram, the block of mass \( 2 \mathrm{~kg} \) and \( 3 \mathrm{~kg} \) are placed one over the other. The contact surface are rough with coefficient of friction \( \mu_{1}=0.2, \mu_{2}=0.06 \). A force
\[
F=\frac{1}{2} t
\]
in the direction. (Given that \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
The acceleration time graph for \( 3 \mathrm{~kg} \) block is
\( (1) \)
(2)
(3)
(4)


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