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  4. The coefficient of static friction between two blocks is 0.5 and the table is smooth. The maximum horizontal force that can be applied to move the blocks together is ........ N. (. take .g =10 ms -2)

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Q. The coefficient of static friction between two blocks is $0.5$ and the table is smooth. The maximum horizontal force that can be applied to move the blocks together is ........ $N$.
$\left(\right.$ take $\left.g =10 \,ms ^{-2}\right)$Physics Question Image

JEE MainJEE Main 2021Laws of Motion

Solution:

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$F = 3a ($ For system $) \,\,\,.....(i)$
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$fs _{\max }=1 a ($ for $1 \,kg$ block$ )\,\,\, ....(ii)$
$\mu \times 1 \times g = a$
$\Rightarrow 5= a$
$F =15 \,N$