Question

23.A rectangular plate 3 m long and 1 m wide is immersed vertically in water in such a way that its 3 m side is parallel to the water surfaces and is 1 m below it. Find (i) Total pressure on the plate and (ii) Position of the centre of pressure.

Answer 1

The total pressure on the plate is 9800 Pa. The position of the centre of pressure is 2.083 m from the top surface of the plate.

Step-by-step explanation:

To find the total pressure on the plate, we can use the formula P = ρgh, where P is the pressure, ρ is the density of water, g is the acceleration due to gravity, and h is the depth of the plate below the water surface. In this case, h = 1 m, ρ = 1000 kg/m³, and g = 9.8 m/s². Therefore, P = 1000 x 9.8 x 1 = 9800 Pa.