[amp_mcq option1=”above it” option2=”below it” option3=”at same point” option4=”above or below depending on area of body” correct=”option3″]
The correct answer is C. at the same point.
The center of pressure is the point at which the total upward force exerted by a fluid on an immersed object acts. It is always located directly below the center of gravity of the object.
The center of gravity is the point at which the entire weight of an object can be considered to be concentrated. It is located by balancing the object on a knife edge.
If the object is a uniform sphere, the center of gravity and the center of pressure will be located at the same point. However, if the object is not uniform, the center of gravity and the center of pressure will be located at different points.
For example, if the object is a cylinder with a hole in the middle, the center of gravity will be located at the center of the cylinder, but the center of pressure will be located below the center of the cylinder. This is because the water pressure on the bottom of the cylinder is greater than the water pressure on the top of the cylinder.
The difference between the center of gravity and the center of pressure is called the metacentric height. The metacentric height is important in determining the stability of a ship.