Orbiting Satellites (VCE SSCE Physics): Flashcards
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Practise the cards
10 cards from this deck
Shape of planetary orbits (Kepler's discovery)
Shape of planetary orbits (Kepler's discovery)
Elliptical, not circular
What satellites do whilst orbiting
What satellites do whilst orbiting
Continuously fall toward Earth while moving sideways fast
Force providing centripetal force for satellites
Force providing centripetal force for satellites
Gravitational force
Formula for orbital speed
Formula for orbital speed
Does satellite mass affect orbital speed?
Does satellite mass affect orbital speed?
No, independent of satellite mass
Effect of increasing orbital radius on speed
Effect of increasing orbital radius on speed
Speed decreases
Orbital period for geostationary satellite
Orbital period for geostationary satellite
24 hours (matches Earth's rotation)
Altitude of geostationary orbit
Altitude of geostationary orbit
36,000 km above Earth's equator
Date first artificial satellite launched
Date first artificial satellite launched
4 October 1957 (Sputnik 1)
Why astronauts in orbit feel weightless
Why astronauts in orbit feel weightless
No normal force acts on them ()