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Question: Answered & Verified by Expert
A ball moving horizontally with a velocity $2 \mathrm{~ms}^{-1}$ strikes the bob of a seconds pendulum at rest. If the mass of the bob is equal to the mass of the ball and the collision is perfectly elastic, after collision the bob of the pendulum will raise to a height of
$\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$
PhysicsCenter of Mass Momentum and CollisionAP EAMCETAP EAMCET 2018 (24 Apr Shift 2)
Options:
  • A $80 \mathrm{~cm}$
  • B $60 \mathrm{~cm}$
  • C $40 \mathrm{~cm}$
  • D $20 \mathrm{~cm}$
Solution:
1825 Upvotes Verified Answer
The correct answer is: $20 \mathrm{~cm}$
No solution. Refer to answer key.

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