First slide

Fluid statics

Question

A uniformly tapering vessel is filled with a liquid of density 900 kg/m³ The hydrostatic thrust that acts on the base of the vessel due to the liquid is (g =10 m / $s^{2}$ )

Moderate

A

3.6 N
B

7.2 N
C

9.0 N
D

14.4 N

Solution

$P = h ρ g = 0 .4 \times 900 \times 10 N / m^{2} = 3600 N / m^{2} Force on the base = P \times A F = 3600 \times 2 \times 10^{- 3} N = 7 \cdot 2 N$

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