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26.

A uniform cylinder of length l and mass M having cross-sectional area A is suspended, with its length vertical from a fixed point by a massless spring such that it is half-submerged in a liquid of density, σ  at the equilibrium position. The extension x0 of the spring when it is  in equilibrium is 


A) $\frac{Mg}{k}$

B) $\frac{Mg}{k}\left(1-\frac{LA_{0}}{M}\right)$

C) $\frac{Mg}{k}\left(1-\frac{LA_{0}}{2M}\right)$

D) $\frac{Mg}{k}\left(1+\frac{LA_{0}}{M}\right)$



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