The bob A of a pendulum released from 30° to the vertical hits another bob B of the same mass at rest on a table as shown in figure. How high does bob A rise after the collision? Neglect the size of the bobs and assume the collision to be elastic.
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The bob A will not rise after collision.
explanation :- a/c to question, "collision is elastic" .
and we know, in elastic collision, the velocities of bodies are interchanged. hence, the bob A will come to rest and bob B will move with velocity of bob A after collision.
note :- Elastic collisions are collisions in which both momentum and kinetic energy are conserved. The total system kinetic energy before the collision equals the total system kinetic energy after the collision.
explanation :- a/c to question, "collision is elastic" .
and we know, in elastic collision, the velocities of bodies are interchanged. hence, the bob A will come to rest and bob B will move with velocity of bob A after collision.
note :- Elastic collisions are collisions in which both momentum and kinetic energy are conserved. The total system kinetic energy before the collision equals the total system kinetic energy after the collision.
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