A vertical rectangular plate extends from the free surface to a depth of 3.0 m in water. The depth of the centre of pressure below the free surface is N m. Find N.

Question

G1 Physics · Accepted Answer

For a vertical rectangular plate of height h whose upper edge lies at the free surface, h(CP) = 2h/3. Here, h = 3.0 m. Therefore, h(CP) = 2×3/3 = 2 m. Hence, N = 2.