Hydrostatic Force
HYDROSTATIC FORCE (EXPERIMENT 1)
INTRODUCTION
The determination of force which are exerted by liquid which are at rest on surface immersed in liquids. From the study by hydrostatic, the following principles have been established : a) There are no shear stress present when the fluid is not in motion. b) The pressure exerted by a fluid under hydrostatic conditions. This pressure acts perpendicular to an immersed surface. c) Hydrostatic pressure various linearly, increasing with an increase in depth.
OBJECTIVES
1. To determine the hydrostatic thrust on a plane surface partly immersed in water. 2. To determine the position of the line of action of the thrust. 3. To compare the position determined by experiment with the theoretical position . 4. To verify the formula for calculating hydrostatic thrust.
THEORY
When the quadrant is immersed in water it is possible to analyze the forces acting on the surfaces of the quadrant as follows:
The hydrostatic force at any point on the curved surface is normal to the surface and therefore resolves through the pivot point because this is located at the origin of the radii. Hydrostatic forces on the upper and lower curved surfaces therefore have no net effect – no torque to affect the equilibrium of the assembly because all of these forces pass through the pivot. The forces on the sides of the quadrant are horizontal and cancel out (equal and opposite).
Figure 1 Diagram of F1-12 Apparatus
Once the moment caused by the weight of the quadrant is nullified by adjusting the counterweight so that balancing arm is perfectly collinear with the level indicator a balancing weight of known mass is added and water meticulously added until the balancing arm has once again returned to its previous precisely noted position aided by the hydrostatic force of water creating a moment which counter acts the torque of the weight
INTRODUCTION
The determination of force which are exerted by liquid which are at rest on surface immersed in liquids. From the study by hydrostatic, the following principles have been established : a) There are no shear stress present when the fluid is not in motion. b) The pressure exerted by a fluid under hydrostatic conditions. This pressure acts perpendicular to an immersed surface. c) Hydrostatic pressure various linearly, increasing with an increase in depth.
OBJECTIVES
1. To determine the hydrostatic thrust on a plane surface partly immersed in water. 2. To determine the position of the line of action of the thrust. 3. To compare the position determined by experiment with the theoretical position . 4. To verify the formula for calculating hydrostatic thrust.
THEORY
When the quadrant is immersed in water it is possible to analyze the forces acting on the surfaces of the quadrant as follows:
The hydrostatic force at any point on the curved surface is normal to the surface and therefore resolves through the pivot point because this is located at the origin of the radii. Hydrostatic forces on the upper and lower curved surfaces therefore have no net effect – no torque to affect the equilibrium of the assembly because all of these forces pass through the pivot. The forces on the sides of the quadrant are horizontal and cancel out (equal and opposite).
Figure 1 Diagram of F1-12 Apparatus
Once the moment caused by the weight of the quadrant is nullified by adjusting the counterweight so that balancing arm is perfectly collinear with the level indicator a balancing weight of known mass is added and water meticulously added until the balancing arm has once again returned to its previous precisely noted position aided by the hydrostatic force of water creating a moment which counter acts the torque of the weight