Question

When a surface is submerged in a fluid, the resultant pressure force on the body acts in what manner? Assume no shear forces are present. There are no forces acting on the submerged body. Perpendicular to the surface of the body. In the same direction as the force of gravity.

Answer 1

Perpendicular to the surface of the body.

Step-by-step explanation:

When a surface is submerged in a fluid the resultant pressure force on the body acts perpendicular to the surface of the body. This is because fluids cannot withstand nor exert sideways forces. One could obtain this analytically considering that the origin of this force comes from the movement of the fluid molecules.