Question

A 200-pound man has a total foot imprint area of 72 in2. Determine the pressure this man exerts on the ground if (a) he stands on both feet and (b) he stands on one foot.

Answer 1

Answer:

(a) Pressure will be $2.777pound/in^2$

(B) Pressure will be $5.555pound/in^2$

Explanation:

We have given weight of the body = 200 pound

Total area of foot imprint $A=72in^2$

(A) When man stands on both feet total area will be $A=72in^2$

So pressure $P=\frac{weight}{area}=\frac{200}{72}=2.777pound/in^2$

(B) When man stands on 1 foot

So area $=\frac{72}{2}=36in^2$

Pressure $P=\frac{weight}{area}=\frac{200}{36}=5.555pound/in^2$