An ideal spring with spring-constants bung from the celling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is:

An ideal spring with spring-constants bung from the celling and a bloc

1.	An ideal spring with spring-constants bung from the celling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is:
Answer» `(4Mg)/(K)` `(2MG)/(k)` `(MG)/(k)` `(Mg)/(2k)` SOLUTION :From conservation of energy `Mgh=1/2kx^2` `:. (2Mgh)/(k)=x^2`But h=x or`x=(2Mg)/(k)`

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An ideal spring with spring-constants bung from the celling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is:

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