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Why doesn't the force of gravity change t he speed of a satellite in a circluar orbit?
Wiki User
∙ 13y ago
Two answers:
Answer #1:
How do you know that it doesn't ?
Answer #2:
Because that's the way gravity works. If you take Newton's simple formula for
the force of gravity, and you have enough geometry and calculus to work with,
you can massage the gravity formula around and discover many facts about
orbits, including these:
-- Every closed orbit is an ellipse.
-- The period of a closed orbit only depends on the dimensions of the ellipse,
not on the mass of the minor body.
(Lucky for an astronaut in the middle of a "space walk" ... it means he can stay in
the same earth-orbit as the Space Shuttle even when he's not holding on to it.)
-- If the orbit isn't circular and the distance between the two bodies changes during
the orbit, then the speed of the minor body is greatest when they're closest together,
and lowest when they're farthest apart.
-- Every open orbit is a hyperbola.
Wiki User
∙ 13y ago
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How does gravity have an effect on density?
it doesnt realy
When you jump why does gravity pull you back down?
gravity is a constant force pulling down on you. jumping doesnt escape that fact.
When is the force of gravity the greatest on you?
doesnt matter what time it is. gravity always has the same force over you unless your on a different planet.
When did newton come up with gravity?
because an apple fell next to him and he started to wonder why it doesnt float in air so he started to explore gravity
Why does weight of the object change its falling speed?
it dosent, because if you drop 2 objects at the same mass and weight from really high up then they will land at the same time. This is because the weight of the object doesnt matter, only the force of gravity.
What is the second greatest source of gravity in space?
Gravity doesnt have a source.
How does gravity cause erosion of the earth surface?
gravity doesnt, it is water and heat that does
How does gravity have an effect on density?
it doesnt realy
Does gravity attract everything together?
No Magnetism As Weel Wich dOESNT iNCLUDE gRAVITY :)
Why doesnt a geostationary satellite trace a path over the surface of the earth?
A geostationary satellite does not trace a path over the surface of the earth because that is what geostationary means - the satellite is stationary over a point on the Earth.
When you jump why does gravity pull you back down?
gravity is a constant force pulling down on you. jumping doesnt escape that fact.
When is the force of gravity the greatest on you?
doesnt matter what time it is. gravity always has the same force over you unless your on a different planet.
What are the changes of the earth when its gravity is as weak as the moon?
Gravity doesnt decline like magnetism, its fixed and proportional to the mass of the earth.
How do the Earths physical processes change and renew the physical features of your planet?
it doesnt it doesnt it doesnt it doesnt it doesnt
Is there a possibility that gravity doesnt exist?
No. Gravity exists. You have proof of this fact by the way you are held down when you walk instead of floating around.
How could plants develop in a zero-gravity environment?
They cant, if the did they planet would fall apart, zero-gravity doesnt exist.
How does a frog change in spring?
it doesnt change
