Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A block of mass 
is connected to a spring of force constant 
and is placed on a smooth horizontal surface. The block is displaced and compresses the spring by 
. The block is left free to move from this position, when the block is at a distance 
from the mean position it collides elastically with an identical block. Time the oscillating block takes to reach from extreme to the mean position is
A
B
C
D
None
Text Solution
Verified by ExpertsThe correct answer is:
C
The time taken in first 
is 
and in next 
will be T/4. So
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