Question

A boy weighs 50 n.the area of contact his two feet is 10square m.find the pressure exerted on one foot

Answer 1

force/weight due to gravity=50 N    contact area of one foot=10/2 m square              

hence, pressure exerted on one foot=50/5 pa=10 pa

Answer 2

F = 50N

Area of contact of two feet = 10 cm sq.

Area of contact of 1 foot = 10/2 = 5cm sq. = 5/10000 m sq.= 0.0005 m sq.

Pressure = F/A = 50/0.0005 pa

=100000 pa