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Hi Sages,

Is there a way to specify a stopping rule or condition like r[t] < rmin when integrating? Here's an example in mathematica s = NDSolve[{r''[t] == -GM/r[t]^2,r[0] = 1000s0, r'[0] = 0,WhenEvent[r[t]<rmin,"<strong>StopIntegration"]},r,{t,0,86400*100}]

thanks Pat Browne

Is there a way to specify a stopping rule or condition like r[t] < rmin rMin when integrating? integrating?

Here's an example in mathematica Mathematica:

s = NDSolve[{r''[t] == -GM/r[t]^2,r[0] -GM / r[t]^2, r[0] = 1000s0, 1000 * s0, r'[0] = 0,WhenEvent[r[t]<rmin,"<strong>StopIntegration"]},r,{t,0,86400*100}]
 
thanks
Pat Browne0,
             WhenEvent[r[t] < rMin, "**StopIntegration**"]}, r, {t, 0, 86400 * 100}]