A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the wat large ball requires a lot of force. The child happens to have a styrofoam ball (the shape of the ball will not distort w forced under the surface), which he forces under the surface of the water. If the child needs to supply 635 N to total the ball, calculate the diameter d of the ball. The density of water is p Prowm = 95.0 kg/m', and the acceleration due to gravity is g = 9.81 m/s². 1.000 x 10' kg/m, the density of styrofc %3D !!
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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