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9-1.Fluid Mechanics
easy
A wooden cylinder floats vertically in water with half of its length immersed. The density of wood is
A
Equal of that of water
B
Half the density of water
C
Double the density of water
D
The question is incomplete
Solution
(b) $V\rho g = \frac{V}{2}\sigma g$
$\rho = \frac{\sigma }{2}$ ($\sigma$ = density of water)
Standard 11
Physics