#Simple yet not so simple
qn 1)
an ideal spring with spring constant k is hung from the ceiling and a block of mass M is attached to it's lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the string is
a)4Mg/k
b)2Mg/k
c)Mg/k
d)Mg/2k

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the answer is 2mg/k

Mg/k?

Good @chand . Would you mind explaining to @goutham1995 ?

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