mg=GMm/R^2-m(w0)^2*R => GMm/(4R^2) =mg/4+m(w0)^2*R/4
GMm/(4R^2)=m(w1)^2*2R =>m(w1)^2*2R =mg/4+m(w0)^2*R/4
=>(w1)^2=g/(8R) + (w0)^2*R/8
=> w1 = (g/(8R) +(w0)^2*R/8)^0.5
T =2pi/w1 其中 w0=2pi/24hour 地球自传角速度
mg=GMm/R^2-m(w0)^2*R => GMm/(4R^2) =mg/4+m(w0)^2*R/4
GMm/(4R^2)=m(w1)^2*2R =>m(w1)^2*2R =mg/4+m(w0)^2*R/4
=>(w1)^2=g/(8R) + (w0)^2*R/8
=> w1 = (g/(8R) +(w0)^2*R/8)^0.5
T =2pi/w1 其中 w0=2pi/24hour 地球自传角速度