Chapter 10, Problem 73GP

To determine

To Find: The force exerted by ventricle.

Answer to Problem 73GP

The force exerted by ventricle at maximum pressure is $130.87\text{ N}$ .

Explanation of Solution

Given info:

Pressure Difference, $P=120\text{ mm - Hg}$

  $1\text{ mm - Hg = }133\text{ Pa}$

Area, $A=82{\text{ cm}}^2\text{ = }82\times {10}^{-4}{\text{ m}}^2$

Formula used:

Write the expression for pressure.

  $P\text{ = }\frac{\text{Force}}{\text{Area}}$

Thus, force can be written as :

  $F\text{ = }P\times A$

Calculation:

Substitute the given values, the amount of force exerted by ventricle at maximum pressure

  $\begin{array}{l}\text{Force }F=120\text{ mm - Hg}\times 133\text{ Pa / }1\text{ mm - Hg}\times 82\times {10}^{-4}{\text{ m}}^{\text{2}}\\ F=130.87\text{ N}\end{array}$

Conclusion:

Thus, force exerted by ventricle at maximum pressure is $130.87\text{ N}$ .a