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  • The average work done by a human heart while it beats once is 0.5J. Calculate the power used by heart if it beats 72 times in a minute.

The average work done by a human heart while it beats once is 0.5J. Calculate the power used by heart if it beats 72 times in a minute.

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we know from the formula that, the power = work done/ time

work done by heart in one beat = 0.5J

work done by heart in 72 beats =72 \times 0.5 = 36J

time = 1 minute = 60 seconds

so, power used by the heart = \frac{36}{60} = 0.6 watts

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infoexpert24

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