Explain blood flow and heart attack with the help of Bernoulli’s principle.
Bernoulli's principle helps in explaining blood flow in artery.
The artery may get constricted due to the accumulation of plaque on its inner walls.
The speed of the flow of the blood in this constriction region is raised which lowers the pressure inside and the artery may collapse due to the external pressure.
The heart exerts further pressure to open this artery and forces the blood through.
As the blood rushes through the opening, the internal pressure once again drops.
Due to same reasons leading to a repeat collapse this may result in heart attack.
A wide vessel with a small hole at the bottom is filled with two liquids. The density and heightof one liquid are $\rho_1$ and $h_1$ and that of the otherare $\rho_2$ and $h_2 \ (\rho_1 >\rho_2)$. The velocity of liquid coming out of the hole is :
A steady flow of water passes along a horizontal tube from a wide section $X$ to the narrower section $Y$, see figure. Manometers are placed at $P$ and $Q$ at the sections. Which of the statements $A, B, C, D, E$ is most correct?
Why does a flag (or ensign) flutter when there is strong wind ? Explain.
Obtain Bernoulli’s equation for steady, incompressible, irrotational and viscous liquid.
Water flows in a horizontal tube (see figure). The pressure of water changes by $700\; \mathrm{Nm}^{-2}$ between $\mathrm{A}$ and $\mathrm{B}$ where the area of cross section are $40\; \mathrm{cm}^{2}$ and $20\; \mathrm{cm}^{2},$ respectively. Find the rate of flow of water through the tube. ........ $\mathrm{cm}^{3} / \mathrm{s}$
(density of water $=1000\; \mathrm{kgm}^{-3}$ )