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Bill Simpson
Mar7-12, 06:58 PM
P: 1,043
I don't think it is the mass. Surprisingly, I don't even think it is your using decimal points and thus approximate constants like the warning message indicates.

I get similar, but different, warnings with this simplified example

DSolve[{- y'[t]^2 + g == y''[t], y'[0] == 0, y[0] == h}, y[t], t]