The discussion revolves around the concepts of Centre of Pressure and Centroid, particularly in the context of submerged surfaces and how pressure affects their positions.
Participants are actively discussing the implications of pressure application on submerged surfaces, with some providing insights into how pressure gradients influence the positions of the Centre of Pressure and Centroid. There is an acknowledgment of differing interpretations regarding the conditions under which these points coincide.
Some participants reference Pascal's Law and the effects of angles on pressure distribution, indicating that assumptions about uniform pressure may not hold in all scenarios.
RUber said:If pressure is applied evenly to a flat surface, then the center of pressure is the centroid. If a submerged surface is at an angle, then the pressure is not constant across the surface.
Likely RUber meant at an angle to the horizontal, which would include 90 degrees.SteamKing said:Even if the submerged surface is perfectly vertical, the centroid and the c.p. don't coincide because of the pressure gradient due to Pascal's Law where P = ρgh.