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A body is situated on a rough horizontal surface and certain horizontal force is applied on it which produces an acceleration. When this force is doubled in magnitude, acceleration of that body is

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Doubled

Halved

Not doubled

Zero

answer is C.

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Detailed Solution

Not doubled
$F - f_{k} = ma a = \frac{F - f_{k}}{m}$

$a^{'} = \frac{2 F - f_{k}}{m}$

$a^{∣} \neq 2 a$

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