Gravitational Fields Flashcards

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1
Q

State Newtons law of gravitation

A

any two point masses attract eachother with a gravitational force that is directly proportional to the product of their masses and inversely proportional to the square of their separation

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2
Q

What is keplers 3rd law

A

relationship between orbital time period and orbital radius is given by T^2 ,,, r^3

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3
Q

Define a geostationary orbit

A

A satellite with a geostationary orbit around a planet will remain vertically above the same point on the equator of that planet at all times

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4
Q

Define a low polar orbit

A

A satellite in a low polar orbit passes above the north and south poles during each complete orbit

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5
Q

Define gravitational potential

A

the work done per unit mass to move a mass from infinity to that point

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6
Q

Define escape velocity

A

the minimum velocity required at the surface of a planet to escape its gravitational pull using its own kinetic energy

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