How to calculate average power?

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SUMMARY

The average power of the human heart pump can be calculated using the formula P = Fv, where F is the force exerted and v is the velocity of blood flow. In this scenario, 20g of blood is accelerated from 0.2 m/s to 0.34 m/s at a rate of 70 beats per minute (bpm). The force can be determined using the mass of the blood and the acceleration, leading to a definitive calculation of the heart's average power output during each beat.

PREREQUISITES
  • Understanding of basic physics concepts such as force, work, and power.
  • Familiarity with the formula P = Fv for calculating power.
  • Knowledge of unit conversions, particularly between grams and kilograms.
  • Basic understanding of human physiology related to heart function.
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  • Study the relationship between heart rate and cardiac output in human physiology.
  • Learn about the principles of fluid dynamics as they apply to blood flow.
  • Explore advanced calculations involving work and energy in biological systems.
  • Investigate the effects of different heart rates on average power output.
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Students studying biology or physics, healthcare professionals interested in cardiovascular function, and anyone seeking to understand the mechanics of the human heart.

ben2010
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during a human heart beat, 20g of blood are pushed into the main arteries. This blood is accelerated from a speed of 0.2m/s to 0.34m/s. For a heart pushing at 70bpm, calculate the average power of the heart pump
 
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This appears as homework, and this is not the place, but power is the time rate of doing work.

P = work/time = Fd/t = F v = Ma v
 

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