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Pressure

Calculate the...

Question

Calculate the pressure exerted by water at the bottom of a lake of depth $6 m$ . (Density of water $= 1000 k g$ $m^{- 3}$ , $g = 10 m s^{- 2}$ ).

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Solution

Hydrostatic pressure = $ϱ g h$
given $ϱ = 10^{3} k g / m^{3} 1 g = 10 {m s}^{- 2}, h = 6 m$
Pressure = $10^{3} \frac{k g}{m^{3}} \times 10 \frac{m}{s^{2}} \times 6$
= 60000 $P_{a}$

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