3 floating & flying intro
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This document discusses the principles of floating and flying, including how fluids affect objects. It introduces key topics like what makes objects float or fly, why insects can walk on water, and why liquids overflow. Additional questions are posed, such as why boats float but coins sink, why objects are lighter in water than air, and how balloons rise and airplanes fly. The document goes on to define matter, the four phases of matter, and characteristics of liquids and gases as fluids. It discusses pressure from solids, liquids and gases, and how the properties of fluids enable floating and flying.
3 floating & flying intro
- 1. FLOATING & FLYING This section of Physics deals with the following areas of concentrations and considerations which will explain the naturally occurring phenomena and principles of the following common cites and situations we can observe in our daily living. They are: - effects of fluids on objects… - what makes objects float or fly… - why can insects walk on fluids like water… - why do liquids overflow…
- 2. FLOATING & FLYING… In the different discussions that we have, additional tricky yet possible questions could be asked such as: * Why do boats float while a coin sinks in water? * Why do objects weigh less in water than in air? * What make balloons go up? * How do airplanes fly?
- 3. FLOATING & FLYING… * Matter – is anything that occupies space has mass and volume. * Matter exists in four different phases: 1. Solids 2. Liquids 3. Gases 4. Plasma Liquids and gases can be referred as FLUIDS. Fluids are characterized of being viscous; or has the ability to flow and fall due to the earth’s gravitational pull. Next>
- 4. FLOATING & FLYING… Solids very compact molecules do not have the space to move freely. <Back
- 5. FLOATING & FLYING… slightly compact *molecules only have a narrow space to move freely. Liquid s <Back
- 6. FLOATING & FLYING… uncompact *molecules have enough space to move freely. Gases <Back
- 7. FLOATING & FLYING… We are surrounded by air and water, also known as fluids. We live and breathe air from the atmosphere. We drink and swim in water. The properties of fluids enable boats to float in water, the submarine to float or submerged in water, balloons to float in air, and airplanes to fly. These are all possible due to the presence of the FORCES OF FLUIDS.
- 8. FLOATING & FLYING… Pressure (P) is a perpendicular force acting on a surface. Force (F) F Pressure = ------------ or P = ---- Area (A) A Arrows represent forces that act perpendicular to the surface of the cube (box)
- 9. FLOATING & FLYING… Pressure can be classified into: 1. Solid pressure 2. Liquid pressure 3. Gas pressure Liquid & gas pressure can be referred to as FLUID PRESSURE. Solid pressure is characterized by solid objects due to the surface in contact with another surface.
- 10. FLOATING & FLYING… Force (F) F Pressure = ------------ or P = ---- Area (A) A In units, * Force is in Newton (N) * Area is in Square Meter (sq.m or m2 ) thus, pressure can be quantified as… Pressure = N/m2 or Pascal (Pa)
- 11. FLOATING & FLYING… The unit Pascal (Pa) was derived and named after the honor of Blaise Pascal – a scientist who conducted studies on fluid pressure. 1 Pa = 1 N/m2 One of the best example of pressures is… atmospheric pressure (atm). Atmospheric pressure is the pressure of air in the atmosphere which is acting and is exerting on us under.
- 12. FLOATING & FLYING… For example: *Suppose the force exerted by the air on the face of cube is 8820 N. Each side of the cube measures 10 cm. Compute the pressure on each cube’s face. Here is the process: P = F/A Given: F = 8820N side = 10 cm. Area = s2 P = 8820N / (0.1 m)2 P = 882000 N/m2
- 13. FLOATING & FLYING… Solve this: *Suppose the force exerted by the air on the face of cube is 10,000 N. Each side of the cube measures 100 cm. Compute the pressure on each cube’s face. Here is the process: P = F/A Given: F = 10,000 N side = 100 cm. Area = 1m2 P = 10000 N / (1 m)2 P = 10,000 N/m2