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3 Cards in this Set
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- Back
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Orbit sizes |
The closer and object is to another that are orbiting the stronger the gravitational force the stronger the force the faster the object has to move to stay in orbit So the closer it is the faster it must go So if the speed changes so must the orbit radius |
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Centripetal force |
If an object is orbiting another at a constant speed and is constantly changing direction it must have a constantly changing velocity meaning the object is accelerating so there must be a force acting on it this is gravity acting inwards pulling it in however it stays in orbit and doesn't fall in as the object is already moving so it just causes it to change direction, the object keeps accelerating towards the other but instantaneous velocity keeps it traveling in a circle |
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