Sinusoidal Motion Clarification

[justadream]

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When something varies “sinusoidally”, I know that means it is cyclic. But what that means that the cycles have to go from negative to positive to negative to positive…etc.?



Can you have it be all positive?

 

[NextStepTutor_2]

Mathematically, yes, you could shift a function high enough that its values would not drop below the x-axis. However, the shape of the wave would remain the same and you would still have the same rise and fall - the very nature of the sine function.