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An ideal massles spring S can be compres...

An ideal massles spring S can be compressed 1 m by a force of 100 N in equilibrium. The same spring is placed at the bottom of a frictionless plane inclined at `30^(@)` to the horizontal. A 10 kg block M is released from rest at the top of the incline and is brought to rest momentarily after compressing the spring by 2 m. If `g = 10 m//s^(2)`, the speed of mass just before it touches the spring is `sqrt(10x) m//s`. Find value of x?

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