Two equal masses A and B are arranged as shown in figure. Pulley and string are ideal and

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4-1.Newton's Laws of Motion

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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

$u\, sin\, \theta$

Solution

From the figure,

$\mathrm{v} \Delta \mathrm{t}=\frac{\mathrm{u} \Delta \mathrm{t}}{\cos \theta}$

Standard 11

Physics

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