The left ventricle of a resting adult’s heart pumps blood at a flow rate of 83 cm^3/s, and an average heart beat increases the pressure in the vessels by 70.5 mm Hg, the speed of the blood from zero to 29 cm/s, and the height by 10.85 cm.
a. Calculate the total power output of the left ventricle. Note that most of the power is used to increase blood pressure.

0.87655949325 W

Explanation:

= Change in pressure = 70.5 mmHg

Q = Flow rate =

= Final velocity  = 29 cm/s

= Density of blood = 1050 kg/m³

g = Acceleration due to gravity = 9.81 m/s²

= Height = 10.85 cm

The hydraulic head is (from Bernoulli's equation)

Power is given by

The power output of the left ventricle is 0.87655949325 W

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