The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards right with constant speed v 0 = 2m/s. At t = 0 sec, the spring of constant k = 100 N/cm is unstretched and the block has a speed 1 m/s to left. The maximum extension of the spring is
Text Solution
Verified by ExpertsThe correct answer is:
C
In the frame (inertial w.r.t earth) of free end of spring, the initial velocity of block is 3 m/s to left
and the spring unstretched.
Applying conservation of energy between initial and maximum extension state.
mv 2 = 
kA 2 or A = 
v = 
= 6cm.
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