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Q.

The figure shows two rods BC and OA hinged from B and O respectively. Rod BC has a groove in which point A of rod OA can slide smoothly. At a given instant, the rod BC has an angular velocity $ω_{0}$ . The speed of end A of the rod OA at this instant will be

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a

None of these

b

$ω_{0} l$

c

$3 ω_{0} l$

d

$2 ω_{0} l$

answer is B.

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Detailed Solution

$ω$ of OA $= 2 ω_{0}$
$v_{A} = 2 ω_{0} l$

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