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# How much pressure is applied to the ground by a 55 kg man who is standing on square stilts that measure 0.05 m on each edge?

Answer in units of Pa.

What is this pressure in pounds per square

inch?

Answer in units of lb/in2

### 3 Answers

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- billrussell42Lv 75 months agoFavorite Answer
weight, downward force, is 55 kg x 9.8 N/kg

two stilts? area is 2x0.05²

pressure is weight/area = 55•9.8/2•0.0025 = 108000 N/m² or 108000 Pa

or 15.6 PSI

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- Anonymous5 months ago
p = m*g/A = 55*9.806*10^4/5^2 = 11/5 *9.806*10^4 = 2.16*10^5 Pa

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- Old Science GuyLv 75 months ago
find area

A = 2(0.05^2) = 0.005 m^2

P = F/A = m g / A = 55 kg * 9.8 N/kg / 0.005 m^2 = 1.078E5 Pa

round appropriately

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