First slide

Fluid statics

Question

A cylindrical container of cross sectional area $1 m^{2}$ is partially filled by water to a depth of 50 cm. Now a cube of size $10 c m \times 10 c m \times 10 c m,$ and specific gravity 0.8 is gently placed on the free surface of water. Then increase in pressure at the bottom of container is _____

Moderate

A

5 Pascal
B

7 Pascal
C

8 Pascal
D

12.5 Pascal

Solution

$\begin{array}{l} I n c r e a s e i n p r e s s u r e = \frac{w e i g h t o f b l o c k}{A r e a} = \frac{{(0.1)}^{3} \times 800 \times 10}{1} P a s c a l . \\ = 8 P a s c a l \end{array}$

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