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State Pascal's lae in fluids. |
Answer» Solution : PASCAL's law states that if the effect of gravity can be generated then the pressure in a fluid in equilibrium is the same everywhere. LET us consider any two points A and B inside the fluid imagined. A cylinder is such that points A and B lie at the centre of the circular surface at the TOP and bottom of the cylinder. Let the fluid inside this cylinder be in equilibrium under the action of forces from OUTSIDE the fluid. The forces ACTING on the circular, top and bottom surfaces are perpendicular to the forces acting on the cylindrical surface. Therefore the forces acting on the faces at A and B are equal and opposite and hence add to zero. As the areas of these two faces are equal, pressure at A = pressure at B. This is the proof of Pasccal's law when the effect of gravity is not taken into account. |
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