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Standard XII

Physics

Non Contact Collision

Calculate the...

Question

Calculate the velocity of B just before A collides with ball C :

\frac{v_{0}}{3}

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\frac{2 v_{0}}{3}

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\frac{2 v_{0}}{5}

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none of these

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Solution

The correct option is A $\frac{v_{0}}{3}$
Using law of conservation of momentum and the fact that just before A collides with C, since the string is inextensible and for the length to remain $l$ , all the particles must move with same velocity,
$m v_{0} = 3 m v$
$v = \frac{v_{0}}{3}$

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Calculate the velocity of B just before A collides with ball C :

The correct option is A v03Using law of conservation of momentum and the fact that just before A collides with C, since the string is inextensible and for the length to remain l, all the particles must move with same velocity,mv0=3mvv=v03

The correct option is A $\frac{v_{0}}{3}$
Using law of conservation of momentum and the fact that just before A collides with C, since the string is inextensible and for the length to remain $l$ , all the particles must move with same velocity,
$m v_{0} = 3 m v$
$v = \frac{v_{0}}{3}$