An ideal spring with spring-constant K is hung from the ceiling 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 [IIT-JEE (Screening) 2002]

An ideal spring with spring-constant K is hung from the ceiling and a

1.	An ideal spring with spring-constant K is hung from the ceiling 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 [IIT-JEE (Screening) 2002]
A.	4 Mg/K
B.	2 Mg/K
C.	Isothermal
D.	Mg/2K
Answer» C. Isothermal

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An ideal spring with spring-constant K is hung from the ceiling 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 [IIT-JEE (Screening) 2002]

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