In each heartbeat, a heart pumps 80 m l of blood at an average pressure of 100 mm of Hg . Assuming 60 heartbeats per second, the power output of the heart is ρ H g = 13.6 × 10 3 k g m - 3 g = 9.8 m s - 2

Question

In each heartbeat, a heart pumps 80 m l of blood at an average pressure of 100 mm of Hg . Assuming 60 heartbeats per second, the power output of the heart is ρ H g = 13.6 × 10 3 k g m - 3 g = 9.8 m s - 2, 1.0 W, 1.06 W, 1.12 W, 2.16 W

MARKS App · Accepted Answer

Work done by the heart = p d V Here, d V = 60 × 80 × 10 - 6 m 3 p = 100 m m o f H g × 1.01 × 10 5 P a 760 m m o f H g = 1.33 × 10 4 p a As, power = W o r k d o n e T i m e = 1.33 × 10 4 × 60 × 80 × 10 - 6 60 = 1.06 W

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