Two small balls $A$ and $B$ of mass $M$ and $3 M$ hang from the ceiling by strings of equal length. The ball $A$ is drawn aside so that it is raised to a height $H$ . It is then released and it collides with ball $B$ . Select the correct answer(s)

If collision is elastic, ball

B

will rise to a height

H / 4

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If the collision perfectly elastic, ball

A

will rise to a height

H / 4

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If the collision perfectly inelastic, the combined mass will rises to height

H / 16

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If the collision perfectly inelastic, the combined mass will rises to a height

H / 4

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Solution

The correct options are
A If collision is elastic, ball $B$ will rise to a height $H / 4$
B If the collision perfectly elastic, ball $A$ will rise to a height $H / 4$
C If the collision perfectly inelastic, the combined mass will rises to height $H / 16$

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Two small balls A and B of mass M and 3 M hang from the ceiling by strings of equal length. The ball A is drawn aside so that it is raised to a height H. It is then released and it collides with ball B. Select the correct answer(s)

The correct options are A If collision is elastic, ball B will rise to a height H/4 B If the collision perfectly elastic, ball A will rise to a height H/4 C If the collision perfectly inelastic, the combined mass will rises to height H/16

Two small balls $A$ and $B$ of mass $M$ and $3 M$ hang from the ceiling by strings of equal length. The ball $A$ is drawn aside so that it is raised to a height $H$ . It is then released and it collides with ball $B$ . Select the correct answer(s)

The correct options are
A If collision is elastic, ball $B$ will rise to a height $H / 4$
B If the collision perfectly elastic, ball $A$ will rise to a height $H / 4$
C If the collision perfectly inelastic, the combined mass will rises to height $H / 16$