Gravitational fields Flashcards
Newton’s law of universal gravitation and formula
Satellite
any object that gravitationally orbits another body, such as a planet or star.
What is the Gravitational constant
G=6.67x10-11Nm2kg-2
The relationship between gravitational field strength and distance
This gives the inverse square law that states that gravitational field strength is proportional to the distance giving the relationship of. g∝ 1/r2
What is the formula that represents the inverse square law?
Gravitational field strength formula
Define non and uniform fields
non-uniform field a field for which the direction and/or magnitude is different at different locations in space. Whereas uniform field a field for which both the direction and magnitude are constant throughout the region of space
Monopole
monopole a source (field lines point away) or a sink (field lines point towards) of a field in isolation
Define gravitational field strength
gravitational field strength a measure of the gravitational force that acts on each unit of mass at a point in space
Orbital Motion formulas
In regards to orbital motion does the mass of an object affect orbital speed, radius and period?
the mass of the object which is in orbit does not affect the orbital speed, radius and period.
Conditions for geostationary orbit to occur
- The period of the orbit must equal the period of rotation of the Earth (that is, the duration of one day).
- The satellite must orbit directly above the equator and in the same direction as Earth’s rotation.
What is the formula that speed, mass, and radius is related by?
The formula for centripetal acceleration and relationship with uniform circular motion
What is the formula that speed, radius and period is related by?
What is the formula that mass, radius and period-related by?
