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What equal charges have to be placed on earth and moon to neutralise their gravitational attraction?

What equal charges have to be placed on earth and moon to neutralise their gravitational attraction?

Grade:12

2 Answers

Vikas TU
14149 Points
6 years ago
For the Equilbrium ,
Fe = Fg
Kq^2/ r^2 = Gm1m2/r^2
q = charge
r = distance
m1 = mass of earth
m2  = mass of moon
q^2 = Gm1m2
on substituting the value
q = 0.86 x10^!4 C
Rishi Sharma
askIITians Faculty 646 Points
3 years ago
Dear Student,
Please find below the solution to your problem.

For the Equilbrium ,
Fe = Fg Kq^2/ r^2
= Gm1m2/r^2
q = charge
r = distance
m1 = mass of earth
m2 = mass of moon
q^2 = Gm1m2 on substituting the value
q = 0.86 x 10^!4 C

Thanks and Regards

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