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Question

A large tank of area A contains liquid of density ρ . A cylinder of density ρ4 and length ℓ, and area a (aA) is kept in equilibrium by applying an external vertically downward force. The cylinder is just submerged in liquid. At t = 0 the external force disappears instantaneously. Answer the following questions.



The acceleration of cylinder at the instant t = 0 is

A
g
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B
2g
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C
3g
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D
Zero
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Solution

The correct option is C 3g

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