Question

Two satellites of mass ratio `1:2` are revolving around the earth in circular orbits such that the distance of the second satellite is four times as compared to the distance of the first satellite. Find the ratio of the centripetal forces.

Answer 1

Correct Answer - 8
Centripetal force `=f=(mv^(2))/r-(GMm)/(r^(2))`
where `m` is the mass of the satellite and `m` is the mass of the satellite of earth (mass `M`)
`:. (f_(1))/(f_(2))=1/2((4r_(1))^(2))/(r_(1)^(2))=16/2=8`