1. Cover the entire surface area of the box and one side of the cardboard with masking tape. 2. Let A be the scouring pad, B be the sponge, and C be the 100-g soap box. Arrange A, B, and C on a flat surface. 0 Gradually increase 0 by lifting the right end of the sponge. 3. Interchange the position of A and B as shown. Increase e gradually by lifting the right end of the sponge. C B For steps 2 and 3 ● What happens to the box as you increase ? ● Between steps 2 and 3, which has the larger & before the box start to move? What can you conclude with the coefficient of static friction of the sponge and the scouring pad? Observe what will happen to the box for steps 2 to 6. C B A A
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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