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 P: 79 It isn't making any intuitive sense. If it isn't moving in circular motion, how can it have angular frequency or speed? Also, $$v=\pm ω\sqrt { A^{ 2 }-x^{ 2 } }$$ only applies to SHM with springs only, right? Also, does anyone know how to derive this equation below? $$x=\frac { \pm \sqrt { { { v }_{ max } }^{ 2 }+{ v }^{ 2 } } }{ ω }$$