Two equal masses $A$ and $B$ are arranged as shown in the figure. Pulley and string are ideal and there is no friction. Block $A$ has a speed $u$ in the downward direction. The speed of the block $B$ is :-
Two equal masses $A$ and $B$ are arranged as shown in the figure. Pulley and string are ideal and there is no friction. Block $A$ has a speed $u$ in the downward direction. The speed of the block $B$ is :-
- A
$u\, cos\, \theta$
- B
$\frac{u}{sin\, \theta}$
- C
$\frac{u}{cos\, \theta}$
- D
$u\, sin\, \theta$
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- [JEE MAIN 2021]
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