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In each heart beat, a heart pumps 80 ml of blood at an average pressure of 100 mm of Hg. What will the power output of the heart? (Assume 60 heart beat per minute)

In each heart beat, a heart pumps 80 ml of blood at an average pressure of 100 mm of Hg. What will the power output of the heart? (Assume 60 heart beat per minute)

Grade:12th pass

1 Answers

Arun
25768 Points
2 years ago
The work required per beat is
W = V * (Delta P)where V is the volume pumped and delta p is the pressure increase provided.
W = 80 * 10^-6 * 100 * 1.01 * 10^5 /760
W = 1.06 Joules
Time between each neat = 60/60 = 1 sec
Hence power P = W/t = 1.06 watt

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