The ships entering fresh water from sea water sink to a greater extent. Explain why ?

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Solution

Sea water has many salts dissolved and hence the density of sea water is greater than that of fresh water.
The buoyant force acting on an object immersed in liquid is given by
$B = V_{i m m} ρ g$
Hence under equilibrium,
$W = B = V ρ g$
Since $ρ_{f r e s h} < ρ_{s e a}$
$v_{i m m_{f r e s h}} > V_{i m m_{s e a}}$

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The ships entering fresh water from sea water sink to a greater extent. Explain why ?

Sea water has many salts dissolved and hence the density of sea water is greater than that of fresh water.The buoyant force acting on an object immersed in liquid is given by B=VimmρgHence under equilibrium,W=B=VρgSince ρfresh<ρseavimmfresh>Vimmsea