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A manometer connected to a closed tap re...

A manometer connected to a closed tap reads `4.2 xx 10^(6) N/m^(2)` and when tap is opened the readin of manometer falls to `4.0 xx 10^(6) N/m^(2)` . Find the speed of flow of water.

Text Solution

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According to Bernoullis theorem
`P/rho + 1/2 v^(2) = constent`
1/2v^(2) = (P_(1) - P_(2))/rho
`1/2 v^(2) = (4.2xx10^(6) - 4.0xx10^(6))/1000`
v = 20 m/s
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