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The heart of 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 = 10m/s2 then the power of heart in watt is :
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- 2.35
- 3.0
- 1.50
- 1.70
Correct Option: D
Power F→ . V→ = P A V→ = ρ gh AV
 | ∵ P = | and P = ρ gh |  | |
| A |
= 13.6 × 103 × 10 × 150 × 10–3 × 0.5 × 10–3 / 60
| = | = 1.70 watt | |
| 60 |
