High pressure can be an advantage or a nuisance. Wide tyres reduce pressure. Pressure helps vehicles to stop and prevent them from sinking into mud and snow. Tracks on the vehicles also do the same jobs- help vehicles to stop and prevent them from sinking into the mud and snow. By wearing snowshoes can made life easier to walk in deep snow. They spread a person's weight over a much bigger area than normal shoes. Pressure can be increased by making the area that the force presses on smaller.
An elephant weighing 40000N stands on one foot of area 1000cm2(=1/10m2). What pressure is exerted on the ground?
Formula first: pressure = force/ area
Then put in the numbers=40000N/1/10m2
=40000 X 10N/m2
What is the pressure exerted by a girl weighing 400N standing on one 'stiletto' heel of area 1cm2(=1/10000 m2)?
Formula first: Pressure = force/ area
=400 X 10000 N/m2
=4000000 N/m2(ten times bigger)
So, the elephant exerts a larger force (because of it is heavier) but the girl's heel exerts a larger pressure (because of its smaller pressure area).