Yahoo Answers: Answers and Comments for Suppose the gravitational force between two massive spheres is 8.1 N when the spheres are 2 meters apart...? [Physics]
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From Jalesa
enUS
Wed, 22 May 2019 01:05:52 +0000
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Yahoo Answers: Answers and Comments for Suppose the gravitational force between two massive spheres is 8.1 N when the spheres are 2 meters apart...? [Physics]
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https://answers.yahoo.com/question/index?qid=20190522010552AAEH7kA
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From D g: its simple math
Fg = G *m1*m2/r^2
if at when...
https://answers.yahoo.com/question/index?qid=20190522010552AAEH7kA
https://answers.yahoo.com/question/index?qid=20190522010552AAEH7kA
Wed, 22 May 2019 01:14:45 +0000
its simple math
Fg = G *m1*m2/r^2
if at when r = R
Fg = 8.1 as the question states
8.1 = G*m1*m2/R^2
where R = 2 meters
if we change r to 6 m we can do a math trick
6 m = 3* 2m = 3*R
newFg = G m1 *m2/ (3*R)^2
newFg = (1/3^2)(G*m1*m2/(R^2))
WE SEE the formula for Fg in the rearranged formula
newFg = (1/9) Fg
so we know that when we triple the distance we 1/9 the force