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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 $13.6 \times 10^{3} kg / m^{3} and g = 10 m / s^{2}$ then the power of heart in watt is:

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detailed solution

Correct option is B

Pressure = 150 mm HgPumping rate = dVdt = 5×10-360m3/sPower of heart P.dVdt = ρgh×dVdt= (13.6×103 kg/m3)(10)×(0.15)×5×10-360= 13.6×5×0.156 = 1.70 watt

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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:

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Ready to Test Your Skills?

free study material

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 $13.6 \times 10^{3} kg / m^{3} and g = 10 m / s^{2}$ then the power of heart in watt is: