A block of mass 'm' is attached to a spring in natural length of spring constant 'k'. The other end 'A' of the spring is moved with a constant velocity 'v' away from the block. Find the maximum extension in the spring -
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Consider an observer moving with speed v with point A in the same direction.
In the frame of observer, block will have initial velocity v towards left.
During maximum extension, the block will come to rest with respect to the observer. Now, by energy conservation, 
x max = 
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