In the figure shown, the two identical balls of mass $M$ and radius $R$ each, are placed in contact with each other on the frictionless horizontal surface. The third ball of mass $M$ and radius $R/2$, is coming down vertically and has a velocity $= v_0$ when it simultaneously hits the two balls and the smaller ball does not stop after collision, but continues to move downwards with $a$ speed $= v_0/2$, after the collision. Then, the speed of each bigger ball after collision is
In the figure shown, the two identical balls of mass $M$ and radius $R$ each, are placed in contact with each other on the frictionless horizontal surface. The third ball of mass $M$ and radius $R/2$, is coming down vertically and has a velocity $= v_0$ when it simultaneously hits the two balls and the smaller ball does not stop after collision, but continues to move downwards with $a$ speed $= v_0/2$, after the collision. Then, the speed of each bigger ball after collision is
- A
$4v_0/ \sqrt 5 $
- B
$2v_0/ \sqrt 5 $
- C
$v_0 /2 \sqrt 5 $
- D
None
Similar Questions
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$(ii) $ $M$ as system, along $Y'$
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Which of the following is correct?
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$(i)$ $m$ as system, along $Y'$
$(ii) $ $M$ as system, along $Y'$
$(iii)$ $(M + m)$ as system, along $X$
$(iv)$ $(M + m)$ as system, along $Y$
Which of the following is correct?
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- [AIPMT 2010]
Three different projectiles, each with the same mass, are fired with speed $v$ at a wall. In case $A,$ the projectile bounces straight back with speed $v.$ In case $B$, the projectile sticks to the wall. In case $C$, the projectile crashes through the wall and emerges with half its original speed. These three cases are shown here.
Place the impulse exerted by the wall on the projectile in each of these three cases in the correct order.
Three different projectiles, each with the same mass, are fired with speed $v$ at a wall. In case $A,$ the projectile bounces straight back with speed $v.$ In case $B$, the projectile sticks to the wall. In case $C$, the projectile crashes through the wall and emerges with half its original speed. These three cases are shown here.
Place the impulse exerted by the wall on the projectile in each of these three cases in the correct order.