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Ocr physics text book question on gravitational field
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How far above the surface of the earth is the gravitational field strength a)half b)1/4 of it's value at the surface? The radius of the earth is 6.4 x10^6 HELP PLEASE
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(Original post by unique_freak)
How far above the surface of the earth is the gravitational field strength a)half b)1/4 of it's value at the surface? The radius of the earth is 6.4 x10^6 HELP PLEASE
How far above the surface of the earth is the gravitational field strength a)half b)1/4 of it's value at the surface? The radius of the earth is 6.4 x10^6 HELP PLEASE
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G IS PROP 1/r^2
g = k/r^2
You know surface g value and radius.
Find k.
Then you'll know which g values you want, and solve for r. Then subtract earth's radius cos you want height above earth
g = k/r^2
You know surface g value and radius.
Find k.
Then you'll know which g values you want, and solve for r. Then subtract earth's radius cos you want height above earth
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(Original post by L'Evil Fish)
G IS PROP 1/r^2
g = k/r^2
You know surface g value and radius.
Find k.
Then you'll know which g values you want, and solve for r. Then subtract earth's radius cos you want height above earth
G IS PROP 1/r^2
g = k/r^2
You know surface g value and radius.
Find k.
Then you'll know which g values you want, and solve for r. Then subtract earth's radius cos you want height above earth
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