Question

Calculate the pressure exerted on the heel of a boy’s foot if the boy weighs 80 N and he lands on one heel,which has an area of 16 cm2.

Answer 1

Pressure at a given surface is given as ratio of normal force and area

so here force due to heel of the shoes is given as 80 N

and the area of the heel is given as 16 cm^2

so we can say

`P = (F)/(A)`

here we have

F = 80 N

`A = 16 cm^2 = 16 * 10^(-4) m^2`

`P = (80)/(16 * 10^(-4))`

`P = 5 * 10^4 N/m^2`

so pressure at the surface due to its heel will be 5 * 10^4 N/m^2