Calculate the pressure exerted on the ground by a 79 kg person standing on one foot. Assume that...

Question:

Calculate the pressure exerted on the ground by a 79 kg person standing on one foot. Assume that the bottom of the person's foot is 13 cm wide and 28 cm long.

The Relation Between Pressure, Force, and Area:

The pressure is defined as the force per unit of area. The pressure, force, and area are related to each other by an equation;

{eq}P = \dfrac{F}{A} {/eq}

where:

  • {eq}P {/eq} is the pressure at any point,
  • {eq}A {/eq} is the area on which the force is applied and
  • {eq}F {/eq} is the force exerted on the surface of area A.


Some Terminologies:

  • Pressure - the amount of force in one unit of area that is perpendicular to the surface area
  • Force - an action that makes the body move or distorts its motion
  • Area - amount of extent of a surface or a piece of land

Answer and Explanation:


Pressure is defined as the force per unit area:

{eq}P = \displaystyle \frac {F}{A} {/eq}

In our case, the force is:

{eq}F = mg {/eq}

Area is...

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What is Static Pressure? - Definition & Formula

from Introduction to Engineering

Chapter 5 / Lesson 3
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