Question

How much pressure will a man of weight 80kg exert on the ground when (i) he is lying
and (ii) he is standing on his feet ? Given that the area of the body of the man is 0.6 m2
and that of a foot is 80 cm2

Answer 1

Answer:

(a)  1200 Pa                   (b)  90000 Pa

Explanation:

(a)Lying                             (b) standing on feet

P = F/A                     ║ P = 80×9 / 0.008

P = W/A                    ║P = 90000 Pa

P = 80×9/0.6            ║

P = 1200 Pa