5.4 Harder questions on Pressure
07 October 2011
16:30
· Collins, p.107, Q.4.
Question 4
Answer
Ordinary shoe=
P = F/A = 400 / ( 0.05 X 0.05) = 160000 N/m2 or 160K Pa
Elephant
P= F/A= 5000/(pie X 0.1^2) = 159,000N/m2 or 159KPa
High heels
P= F/A = 400/0.0005=8,000,000 N/m2
Wooden Floor = 4000KPa = 4,000,000 N/m2
The high heel will damage the floor.
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