First slide

Fluid statics

Question

Find the force acting on the piston of 3 ${cm}^{2}$ at point 2 due to the water column of height 10 m.

Moderate

A

10 N
B

20 N
C

30 N
D

40 N

Solution

F = PA = $ρghA$
= $10^{3} \times 10 \times 10 \times 3 \times 10^{- 4} = 30 N$

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