PROBLEM 2: A rectangular plane, 1.2 m by 1.8 m is submerged in water and makes an angle of 30° with the horizontal, the 1.2 m sides being horizontal. (a) lustrate the situation (b) if the top edge of the plane is 1 meter below the free surface, determine the magnitude of hydrostatic force acting on either side of the plane in KN. (c) At what depth from the water surtace is the hydrostatic torce acting?

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.