Two objects have masses of $18 MG$ and $2 MG$ . How much does the gravitational potential energy between the objects change if the distance between them changes from $160 m$ to $230 m$ ?

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Answer 1 · 2017-01-19T15:05:24

$4.841*10^-8N$

$F=(Gmm)/d^2$

Solve each case.
$F=(6.67*10^-11Nm^2/ (kg^2) *18,000kg *2000kg)/(160m)^2$
$F=9.38*10^-8 N$

Case2

$F=(6.67*10^-11Nm^2/ (kg^2) *18,000kg *2000kg)/(230m)^2$
$F=4.539*10^-8N$

The difference is $9.38*10^-8 - 4.539*10^-8=4.841*10^-8N$

Two objects have masses of 18 MG18 MG and 2 MG2 MG. How much does the gravitational potential energy between the objects change if the distance between them changes from 160 m160 m to 230 m230 m?