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Acceleration of block m is ( $θ$ < $45^{o}$ )

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$gcos θ$

$gsin θ$

$g (\cos θ + \sin θ)$

$g (\cos θ - \sin θ)$

answer is D.

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Detailed Solution

$F_{R} = mgcosθ - mgsinθ$ $\Rightarrow a = \frac{F_{R}}{M} = g (\cos θ - \sin θ)$

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