Question

The power of heart which beats 72 times in a minute is 1.2 kW. Calculate the work done by the heart for each heart beat.

Answer 1

$Power=\frac{workdone}{time}$

$P=1200W$

$t=\frac{60}{72}s$

$W=P\times T$

$=12000\times \left(\frac{60}{72}\right)$

$=1000J$