Q. Which principle is used for calculating the centre of pressure?

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Q. In a vertically submerged plane surface, pressure at every point remains same

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Q. The magnitude of total pressure and centre of pressure is independent on the shape of the submerged plane surface.

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Q. What is the variation of total pressure with depth for any submerged surface if we neglect variation in the density?

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Q. A pipe line which is 6 m in diameter contains a gate valve. The pressure at the centre of the pipe is 25 N/cm². If the pipe is filled with specific gravity 0.8, find the force exerted by the oil upon the gate.

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Q. Determine the centre of pressure on an isosceles triangle plate of base 6m and altitude 6m when it is immersed vertically in an oil of specific gravity 0.75. The base of the plate coincides with the free surface of oil.

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Q. A tank contains water upto a height of 0.5 m above the base. An immiscible liquid of specific gravity 0.75 is filled on the top of water upto 1.5 m height. Calculate total pressure on side of the tank.

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Q. A circular opening, 6m diameter, in a vertical side of a tank is closed by a disc of 6m diameter which can rotate about a horizontal diameter. Calculate the force on the disc. The centre of circular opening is at the depth of 5 m.

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Q. Find the total pressure on a rectangular plate of dimensions 2×3 m immersed in a fluid of specific gravity 0.65 at a depth of 6 m from the surface.

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Q. Find the total pressure on a circular plate of diameter 3 m immersed in a fluid of specific gravity 0.75 at a depth of 5 m from the surface on a planet having acceleration dueto gravity 7 m/s².

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Q. A rectangular plate surface 3m wide and 5m deep lies in fluid of specific gravity 0.9 such that its plane makes an angle of 45⁰ with water surface, upper edge 3m below free water surface. Determine the total pressure.

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Q. A rectangular plan surface 5 m wide and 7 m deep lies in water in such a way that its plane makes an angle 60⁰ with the free surface of water. Determine the total pressure force when the upper edge is 3 m below the free surface.

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Q. A circular plate 5.0 m diameter is immersed in such a way that its greatest and least depth below the free surface are 3 m and 1 m respectively. Determine the position of the centre of pressure.

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Q. For an inclined plate the pressure intensity at every point differs.

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Q. The pressure intensity for a horizontal plate is maximum on the surface of the earth and decreases as we move further away from the surface of the earth either downward or upward.

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Q. For an inclined plane for which position, maximum total pressure acts on it.

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Q. The total pressure or pressure intensity is zero for any point on inclined surface in space.

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Q. In case of spherical bodies with uniform mass distribution, what is the position of center of pressure relative to centre of gravity.

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Q. A rectangular tank is moving horizontally in the direction of its length with a constant acceleration of 3.6 m/s². If tank is open at the top then calculate the angle of water surface to the horizontal.

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Q. A rectangular tank is moving horizontally in the direction of its length with a constant acceleration of 4.8 m/s². The length of tank is 7 m and depth is 1.5 m. If tank is open at the top then calculate the maximum pressure intensity at the bottom.

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