If F is 400 N and S=2m^2, find the pressure(P) ?
S cannot be displacement because it has dimensions of (Length)^2 whereas displacement has dimensions of (Length). This means that S is an area of some kind although it is more usual to use A to denote an area
where is the angle between the force and the vertical and will be measured in or
In your example it's probably a perpendicular force so and it reduces to