wˌɛɹ ðə kˈɑːnstənt mˈʌst biː pˈɑːzᵻtˌɪv ˈaɪ.ˈiː., kˈeɪ zˈiəɹoʊ tʊ ɛnʃˈʊɹ bˈaʊndᵻd, klˈoʊzd ˈɔːɹbɪts; ˈʌðɚwˌaɪz, ðə pˈɑːɹɾɪkəl wɪl flˈaɪ ˈɔf tʊ ɪnfˈɪnᵻɾi.
where the constant  must be positive (i.e., k > 0) to ensure bounded, closed orbits; otherwise, the particle will fly off to infinity.