What is the minimum pressure required to force blood from the heart to the top of the heart (a vertical distance of 50 cm) ? Assume that the density of blood is `1.04 "gcm"^(-3)` and neglect friction.

Explanation

According to Bernoulli.s theorem, `p_(1)+pgh_(1)+1/2 pv_(1)^(2)=p_(2)+pgh_(2)+1/2 pv_(2)^(2)`
Here, `h_(2)-h_(1)=50 cm`
`p=1.04 g//cm^(3)`
`p_(1)-p_(2)=pg (h_(2)-h_(1)) +1/2 p(v_(2)^(2)-v_(1)^(2))`
If `v_(1)=v_(2)`
`p_(1)-p_(2)=pg(h_(2)-h)`
`=1.04 xx 980 xx 50`
`=5.34 xx 10^(4) "dyne/cm"^(2)`