Answer :
The Heart applies a force of 6.7 Newton over an effective area of 16.5cm² to achieve a pressure of 123mm of Hg.
The pressure that heart creates is 123mm Hg.
We know, 760 mm Hg = 10⁵ Pascals.
1 mm Hg = 10⁵/760 Pascals.
So, 123 mm Hg will be 123 x 10⁵/760 Pascals.
The effective area of the blood is 16.5 cm².
So, area = 16.5 x 10⁻⁴ m².
Force applied by the heart = Pressure x area
Force = 123 x 10⁵/760 x 16.5 x 10⁻⁴
Force = 26.7 N.
The force applied by the heart is 26.7 N.
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