Question

the bob of a simple pendulum released at point a hits another same mass of bobby at rest on the table assuming the collision as elastic how I will the pop of arise after collision and what will happen to bob of b

Answer 1

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Answer 2

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As bob B is of same material and same mass as the bob A, therefore, on elastic collision, their velocities are exchanged.

Bob A comes to rest and B moves with the velocity of A.

We can prove this by momentum conservation and e=1.

e=

Speedofapproach

Speedofseparation

=

u

1

v

2

−v

1

=1

⇒v

2

−v

1

=u

1

−(I)

mu

1

=mv

1

+mv

2

⇒v

2

+v

1

=u

1

−(II)

Using(I)&(II)

v

1

=0&v

2

=u

1