An ideal massless spring 
can be compressed 1 m by a force of 100 N in equilibrium. The same spring is placed at the bottom of a frictionless inclined plane inclined at 
to the horizontal. A 10 kg block 
is released from rest at the top of the incline and is brought to rest momentarily after compressing the spring by 2 m. If 
, what is the speed of mass just before it touches the spring?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Now, from energy conservation between natural length of spring and its maximum compression state.
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