Gravitational fields

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Last updated: December 4, 2025

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Hint	Answer
what do you call a field where g is constant in magnitude and direction at all points	uniform
what do you call a field that points towards a single point mass	radial
What happens to the gravitational field strength as distance increases in a radial field	decreases
What does gravity act on	all things with mass
What type of gravitational fields do point masses have	radial
what states that the gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres	newtons law of gravitation
what represents the distance between the centres of the two bodies	R
what is the force per unit mass due to the gravitational field	gravitational field strength
What is the value of g at the Earth's surface	9.81
Is gravitational field strength a scalar or vector quantity	vector
What is another name for gravitational field strength	acceleration due to gravity
What happens to gravitational field strength as distance increases in a radial field	decreases
what is the work done per unit mass to move an object from infinity to that point	gravitational potential
What is the gravitational potential at infinity	zero
what is the work done per unit mass to move an object from one point to another	gravitational potential difference

Hint	Answer
what are points in a gravitational field where every point has the same gravitational potential	gravitational equipotentials
Is work done when moving along a gravitational equipotential	no
What is the unit of gravitational potential	J kg^-1
What is the shape of an equipotential surface in a uniform gravitational field	horizontal planes
What is the shape of an equipotential surface in a radial gravitational field	spherical
what is time taken for a planet or satellite to complete one full orbit	orbital time period
How is the total energy of a satellite found	KE + GPE
what is the velocity an object needs to escape the gravitational pull of a planet	escape velocity
what is it when Orbital period of the satellite matches the rotation period of the body it's orbiting	synchronous orbits
What are the uses of satellites in low orbits	weather monitoring
	earth observation
	spy satellites
What are the uses of geostationary orbits	weather monitoring
What are the uses of geostationary orbits	communication
What is the relationship between orbital period and speed	inverse

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