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The human heart forces 4×10^3 m^3of blood per minute through arteries under a pressure of 0.13 m . Calculate the horsepower of the heart. The density of blood is 1.03×10^3 kg m^-3
actually:power formula is WORK DONE/TIMEnow,1.work done =force*displacement =pressure*area*displacement (because:pressure=force/area) =height*density*gravity*area*displacement (in context of liquid pressure p=hdg) =HDGV finally (because area*displacement taken as volume)2.time takenat last formula of power=HDGV/Tsolving(0.13*13.6*1000*9.8*4/1000)60ans:1.155 i.e.1.2 watt
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