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Standard XII

Physics

Acceleration in 2D

A block of ma...

Question

A block of mass $4 k g$ is placed on another block $B$ of mass $5 k g$ and the block rests on a smooth horizontal table. If the maximum force that can be applied on $A$ so that both the blocks move together is $12 N$ , the maximum force that can be applied on $B$ for the blocks to move together will be :

15 N

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25 N

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27 N

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48 N

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Solution

The correct option is C $27 N$
$F - 12 = 5 \times 3$
$F = 15 + 12$
$F = 27 N$

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A block of mass 4kg is placed on another block B of mass 5kg and the block rests on a smooth horizontal table. If the maximum force that can be applied on A so that both the blocks move together is 12N, the maximum force that can be applied on B for the blocks to move together will be :

The correct option is C 27NF−12=5×3F=15+12F=27N

The correct option is C $27 N$
$F - 12 = 5 \times 3$
$F = 15 + 12$
$F = 27 N$