Two identical blocks 
and 
, each of mass 
resting on smooth floor are connected by a light spring of natural length 
and spring constant 
with the spring at its natural length. A third identical block 
(mass 
) moving with a speed 
along the line joining 
and 
collides with 
, the maximum compression in the spring is
Text Solution
Verified by ExpertsA
After striking with 
, the block 
comes to rest and block 
moves with velocity 
. When
compression in spring is maximum, both 
and 
will be moving with common velocity 
.
From law of conservation of linear momentum,
… (i)
From law of conservation of energy,
KE of block 
KE of system + PE of system
[from Eq.(i)]
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