Tuesday, October 11, 2011

5.4 Harder questions on Pressure

5.4 Harder questions on Pressure
07 October 2011
16:30
·         
Collins, p.107, Q.4.
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P(ordinary shoe heel)= F/A
= (40x10)/(0.05x0.05)
= 160,000 Pa
P (elephant) = F/A
= 500/(πx0.1x0.1)
= 159,155 Pa
P (high heel) = F/A
= 400/(0.5/10000)
= 8,000,000 Pa
High heel will do most damage to the wooden floor.

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