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The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150 mm of mercury. If the density of mercury be 13.6 × 103 kg/m3 and g = 10 m/s2 then the power of heart in watt is

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

Grade:11

1 Answers

Arun
25763 Points
3 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 = \rhogh (dV/dt)
 = 13.6 * 103 *10 *0.15* 5 * 10 –3 / 60
 = 1.70 Watts
 
Regards
Arun (askIITians forum expert)

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