In simple harmonic motion example there is a question(adsbygoogle = window.adsbygoogle || []).push({});

velocity max is given

velocity at time = 0 is given (which is not equal to maximum velocity --> not at equilibrium point at time=0)

graph is also given of the velocity function

IT asks to find the phase angle

in the solution they use the formula

v(t)=-vmaxsin([tex]\omega[/tex]t + [tex]\varphi[/tex])

using vmax and v(0) they solve for [tex]\varphi[/tex]

then they add 2pie to it and say the answer is either x rad or 2pie + xrad (where x is the answer they found)

why do they add this 2pie (i know it has the same value but it can then be k2pie where k is any integer since x rad + 2pie or x rad + 4 pie or x rad + 6pie etc. will also give u the same answer)

any help?

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# Homework Help: Simple Harmonic Motion

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