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# The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of150 mm of mercury. If the density of mercury be 13.6 × 103 kg/m3 and g = 10 m/s2 then the power of heartin watt is

Arun
25763 Points
4 years ago
Dear Aviral

given,
pressure = 150 mm of Hg
Pumping rate of heart of a man

dV/dt = 5 * 10 –3/60  m3/sec
Power of heart = P. dV/dt = $\rho$gh (dV/dt)
= 13.6 * 103 *10 *0.15* 5 * 10 –3 / 60
= 1.70 Watts

Regards
Arun (askIITians forum expert)