MHT CET 2026 Physics question
A ball is released from height 'h' which makes perfectly elastic collision with ground. The frequency of periodic vibratory motion is (g=acceleration due to gravity)
Answer: (A)
Solution
The time to fall through a height from rest is given by , so . After a perfectly elastic collision the ball rebounds with the same speed and rises to the same height in the same time . One full cycle (down and up) therefore has period .
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