Coefficient of static friction between two blocks is 0.5 and table is smooth. maximum horizontal for

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4-2.Friction

hard

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 $\ldots \ldots . N$. (take $\left.g=10\, {ms}^{-2}\right)$

A

$45$

B

$35$

C

$25$

D

$15$

(JEE MAIN-2021)

Solution

${F}=3 {a}$ (For system) $…(i)$

${fs}_{\max }=1 {a}$ (for $1 \,{kg}$ block) $…(ii)$

$\mu \times 1 \times {g}={a}$

$\Rightarrow 5={a}$

${F}=15 {N}$

Standard 11

Physics

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