Pressure at point 1 is P1=P0, Pressure at point 2 is P2=P0+Amg
Applying Bernoulli's equation at top and bottom
P1+21ρv12+ρgh1=P2+21ρv22+ρgh2⇒P0+21ρv2+0=P0+Amg+0+ρgh
⇒5250+103×10×0.4=21×103×v2
v=3ms−1=300cms−1
The area of cross-section of a large tank is 0.5m2. It has a narrow opening near the bottom having area of cross-section 1cm2. A load of 25kg is applied on the water at the top in the tank. Neglecting the speed of water in the tank, the velocity of the water, coming out of the opening at the time when the height of water level in the tank is 40cm above the bottom, will be _____ cms−1.
[Take g=10ms−2 ]
Held on 27 Jun 2022 · Verified 6 Jul 2026.
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