In the given figure, a mass 
is attached to a horizontal spring which is fixed on one side to a rigid support.The spring constant of the spring is 
. The mass oscillates on a frictionless surface with time period 
andamplitude 
. When the mass is in equilibrium position, as shown in the figure, another mass 
is gently fixedupon it. The new amplitude of oscillation will be –
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
JEE Main 2021
We Know that 
and 
Also, momentum is conserved just before and just after the block of mass ( 
) is placed because there is no
implusive force. So –
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