Question

It has been estimated that a man’s heart is about 33 cm below his brain. Considering the density 

of human blood to be 1.1 x 103 kg/m3

, what pressure must the heart produce to supply blood to 

the brain?

Answer 1

$\text{initial data:}$

$\rho = 1.1*10^3\ \frac{kg}{m^3}$

$h = 33cm = 0.33m$

$g = 9.8 \frac{m}{s^2}$

$\text{Let us find the pressure inside a column of blood with a height of h:}$

$p =\rho gh=0.33*1.1*10^3*9.8=3557.4 \ Pa$

$\text{the pressure p found must be produced by the heart }$

$\text{o raise the blood to the height h of the brain}$

$\text{Answer: }3557.4\ Pa$