Question

A girl has a weight of 450 N and her feet have a total area of 0.0300 m2. Calculate the pressure her feet put on the ground.

Answer 1

Answer:

15000N/m²

Explanation:

Given parameters:

Weight  = 450N

Total area  = 0.03m²  

Unknown:

Pressure under her feet  = ?

Solution:

Pressure is the force per unit area on a body.

  Pressure  = $\frac{Force }{Area}$  

Weight is a type of force;

    Pressure  = $\frac{450}{0.03}$   = 15000N/m²