Question

The bob A of a simple pendulum is released when the string makes an angle of $45^{\circ}$ with the vertical. It hits another bob B of the same material and same mass kept at rest on the table. If the collision is elastic}

• A. both A and B rise to the same height
• B. both A and B come to rest at B
• C. both A and B move with the same velocity of A
• D. A comes to rest and B moves with the velocity of A

Hint:

For equal masses in elastic collision, velocities are exchanged.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
In an elastic collision between two equal masses, when one is at rest, the moving mass comes to rest and the stationary mass moves with the velocity of the incident mass.
Step 2: Detailed Explanation:
This is a standard result from conservation of momentum and kinetic energy for equal masses.
Step 3: Final Answer:
A comes to rest and B moves with the velocity of A.