SATHEE: Work Energy And Power Question 323

Work Energy And Power Question 323

Question: A particle of mass m collides inelastically with another particle of mass 3m which is at rest. After the collision first particle comes to rest. Then choose the wrong answer

Options:

A) coefficient of restitution between the particles is $1 / 3$

B) loss of kinetic energy during collision is $(1 / 3) m v^{2}$

C) velocity of second particle after collision is $v / 3$ .

D) all of these

Show Answer

Answer:

Correct Answer: D

Solution:

[d] From conservation of linear momentum velocity of second particle after collision would be

$\frac{V}{3}$ Coefficient of restitution is

$e = \frac{r e l a t i v e v e l o c i t y o f s e p a r a t i o n}{r e l a t i v e v e l o c i t y o f a p p r o a c h} = \frac{V / 3}{V} = \frac{1}{3}$

Loss in kinetic energy

$= \frac{1}{2} v V^{2} - \frac{1}{2} (3 m) {(\frac{V}{3})}^{2} = \frac{1}{3} m V^{2}$

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Work Energy And Power Question 323

Question: A particle of mass m collides inelastically with another particle of mass 3m which is at rest. After the collision first particle comes to rest. Then choose the wrong answer

Options:

Answer:

Solution:

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