First slide

Fluid statics

Question

A wooden cube of side length 1m and mass 600 kg is floating in water. Then hydrostatic pressure on the bottom surface of the cube is

Easy

A

6 K Pa
B

8 K Pa
C

4 K Pa
D

10 K Pa

Solution

Hydro static upthrust = Weight
$∴$ Hydrostatic pressure x Area of bottom = Weight
$\Rightarrow p \times l^{2} = m g \Rightarrow p = \frac{m g}{l^{2}} = \frac{600 \times 10}{1^{2}} N / m^{2} = 6 K P a$

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