A plank of area of cross-section A is ha...

A plank of area of cross-section A is half immersed in liquid 1 of density `rho` and half in liquid 2 of density `2rho`. What is period of osciallation of the plank if it is slightly depressed downwards?

`2pisqrt(m/(rhoAg))`

`pisqrt(m/(rhoAg))`

`2pisqrt((3m)/(2rhoAg))`

`2pisqrt((m)/(3rhoAg))`

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