Question

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Answer 1

Answer:

b is the correct answer

Answer 2

Answer:

Here α = 60°

Since the rod is rigid, the component of the velocities along the rod will be equal

Thus

Explanation:

Va cos 60°= Vb cos 30°

Here, Va= 10 m/s

$= 10 \times \frac{1}{2} = vb \times \frac{ \sqrt{3} }{2}$

$= \: vb = \frac{10}{ \sqrt{3} } \frac{m}{s}$

or

$vb = \frac{ \sqrt[10]{3} }{3} \ \frac{m}{s}$

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