GMm/R²=mv²/R,故R=GM/v²
故R1:R2=v2²:v1²=1:9
GMm/R²=4π²mR/T²,故T²=4π²R³/GM,故T1²:T2²=R1³:R2³=1:729,故T1:T2=
√8:64
Fn=GMm/R²,故Fn1:Fn2=R2²:R1²=81:1
GMm/R²=mv²/R,故R=GM/v²
故R1:R2=v2²:v1²=1:9
GMm/R²=4π²mR/T²,故T²=4π²R³/GM,故T1²:T2²=R1³:R2³=1:729,故T1:T2=
√8:64
Fn=GMm/R²,故Fn1:Fn2=R2²:R1²=81:1