In the system shown in figure all surfaces are smooth. Rod is moved by external agent with accel...

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In the system shown in figure all surfaces are smooth. Rod is moved by external agent with acceleration \( 9 \mathrm{~ms}^{-2} \) vertically downwards. Force exerted on the rod by the wedge will be
(a) \( 120 \mathrm{~N} \)
(b) \( 200 \mathrm{~N} \)
(c) \( 160 \mathrm{~N} \)
(d) \( 180 \mathrm{~N} \)
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