1.

find the amplitude of vibration.

Answer»

`sqrt(((mv^(2))/(k)))`
`sqrt(((mv^(2))/(2k)))`
`sqrt(((mv^(2))/(4K)))`
None of these

Solution :Here, `OMEGA=sqrt(((k)/(2m)))`
`therefore""E_(0)=(1)/(2)(2m)A^(2)omega^(2)`
or `(mv^(2))/(4)=mA^(2)omega^(2)or (mv^(2))/(4)=mA^(2)(k)/(2m)`
`therefore""A=sqrt(((mv^(2))/(2k)))`


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