The natural frequency of the system shown below

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The natural frequency of the system shown below

1. √k / 2m
2. √k / m
3. √2k / m
4. √3k / m

Correct Option: A

Equivalent k,

k_equ =	1	+	1	=	k
	k		k / 2 + k / 2		2

∴ ω_n = √	k
	2m