what force acting on area of 0.5m square will produce a pressure of 500 pascal?
We know that pressure is the normal force acting per unit area. So,
P = F/A
so the force will be
F = P x A
here
P = pressure = 500 Pa
A = area = 0.5 m2
thus, we get
F = 500 x 0.5
so force is
F = 250 N