Gravity Basics
This force exists between any two objects with mass, even your pencil and the Earth — though one clearly wins the arm wrestle.
What is gravitational force
You want to calculate the gravitational force between two masses separated by a distance. This is the equation you should use.
What is the universal law of gravitation equation?
G*m*m/d^2
This explains why satalites still experience gravity in orbit even though they appear weightless (hint, think of the video we watched!)
What is constantly falling towards the earth at the same curvature as the curve of the Earth's surface, keeping it at a constant altitude?
If the distance between two masses is cut in half, gravitational force changes by this factor.
What is four times stronger?
The equation 'Fg = m g' tells us
What is the gravitational force exerted by the earth on an objects mass in a downward direction
This factor makes gravitational force stronger when increased, unlike your motivation on Monday mornings.
You are solving for the distance between two objects when gravitational force and masses are known. This equation must be rearranged.
What is rearranging the universal gravitation equation to solve for distance?
This phenomenon keeps planets moving around the Sun instead of flying off into space
What is gravitational attraction providing centripetal force?
If one mass becomes zero, this happens to the gravitational force
What is the gravitational force becoming zero?
The equaiton 'Fg = m a' tells us
What is a gravitational force causing a change in a objects velocity?
This happens to gravitational force when the distance between two masses doubles.
What is the gravitational force becoming one-fourth as strong?
You are needing to find the distance a smaller object traveled when experiencing a force of gravity between its self and a larger object. First you should....
What is solve for acceleration?
This is why your weight would change on another planet even though your mass stays loyal to you.
What is gravity changing while mass remains constant?
This constant appears in the universal gravitation equation and is suspiciously small but very important.
What is the universal gravitational constant?
The equation Fg = G m m/d^2 tells us
What is the gravitation force that exists between two objects? You know, we are just referencing the force that is attracting both objects, that contain mass, together. This equation has nothing to do with whether or not an object is moving do to that force, which is why the equation does not have 'a' in it. If we wanted to know if that force was causing one of those objects to move, we would have to set 'G m m/d^2' equal to 'm a'. Get it!?! Just the force of attraction is all we are talking about here!.
This is the invisible region around a mass where it can pull on other objects.
What is a gravitational field?
You are needing to find the time it took for a smaller object traveled when experiencing a force of gravity between itsself and a larger object. The equation you should use is....
What is delta x = 1/2 a t^2?
This determines why tides occur due to gravitational interaction.
What is gravitational attraction between Earth and the Moon causing tides?
An object is orbiting around a planet. You must take these two numbers into consideration when addressing the distance between them
What is the radius of the planet plus the distance the object is away from the surface of the planet?
If two objects exert equal gravitational forces on each other despite having very different masses, their accelerations must differ because force is shared equally, but inertia is not.
Why do two unequal masses accelerate differently even though gravitational force is the same on both?
This scientist described the universal law of gravitation after allegedly being bullied by falling fruit.
Who is Isac Newton?
You first solved for the force of attraction between two objects but are being asked to solve for the veloicty at which an object was traveling, the equation you should probably use next is.....
What is F = m a ?
This would happen to gravitational force if both masses were tripled.
What is the gravitational force increasing by a factor of nine?
What is centriepetal force?
Two objects with equal mass exert identical gravitational forces on each other, even though their motions afterward depend on how easily each mass accelerates.
Why do equal gravitational forces not always produce equal motion?