P5
- Created by: martyna-kwiatkowska
- Created on: 26-04-15 18:54
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- Space
- Satellites
- ?
- An object which orbits a larger object in space
- Types
- Man-made (Artificial)
- Geostationary orbit
- 36000km above the equator
- 24hours to orbit. Appears to be in the same position
- Communications
- Cannot be close together as their signals would overlap due to diffraction
- time = Distance/speed= 2x pie r /speed
- Geostationary orbit
- Natural
- Man-made (Artificial)
- The higher the satellite, the longer it takes to orbit
- Moves at a tangent and gravity makes it accelerate towards earth
- ?
- Gravitational Forces
- The large the mass, the greater the gravitational force
- The further away the object, the smaller the gravitational force
- Universe square law: force § 1/distance
- Orbit around sun shorter for planets closer
- Planet travels a shorter distance
- Travels faster, greater gravitational force
- Gravity
- All objects attract each other
- Planets stay in orbit around the sun due to gravitational attraction
- Gravitational Forces
- The large the mass, the greater the gravitational force
- The further away the object, the smaller the gravitational force
- Universe square law: force § 1/distance
- Orbit around sun shorter for planets closer
- Planet travels a shorter distance
- Travels faster, greater gravitational force
- Gravitational Forces
- Object moving in a circle needs a force towards the centre of the circle: CENTRIPETAL FORCE
- Satellites
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