altitude above Earth's surface

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» altitude above Earth's surface

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Dec 11, 2007, 03:49 PM

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ayan333 is offline

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altitude above Earth's surface

At what altitude above Earth's surface would the gravitational acceleration be 4.4 m/s2?
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Dec 12, 2007, 12:11 AM	#2

Capuchin Science Expert Join Date: Oct 2006 Location: UK Posts: 4,740	$F = ma$ $F = \frac{GMm}{r^2}$ equate the two to get: $ma = \frac{GMm}{r^2}$ Cancel m to get $a = \frac{GM}{r^2}$ here a is g (4.4m/s/s), G is the gravitational constant, M is the mass of the Earth and g is the distance from the center of mass of the Earth. Should be easy from here.

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