Gravitation Flashcards
How do you convert light years (ly) and meters?
d = v t
t = (60x60x24x365) x no. ly
What is the definition of gravitational field strength?
The gravitational force acting on a unit mass.
When calculating the radius of a planet to a satellite what is it important to remember?
The total radius is the radius of the planet + the distance from the surface of the planet to the satellite
What is the definition of the gravitational potential of a point in space?
The work done in moving a unit mass from infinity to that point
What is the energy required to move mass between two points in a gravitational field independent of?
The path taken
What is the definition of escape velocity?
The minimum velocity required to allow a mass to escape a gravitational field to infinity, where the mass achieves a zero kinetic energy and maximum (zero) potential energy.
