Graphing simple harmonic motion and determining phi

[@altera1882]

Finally!! I've been looking everywhere for this concept

[@katelynmills1476]

This was so easy to understand! I don't have a background in maths and this helped me so much!! Thank you!!

[@matsudagolo9621]

I just wanna to say you deserve to be the best professor in the world 🌹 I really enjoyed watching your videos Thanks alot 🖤🖤🖤

[@dhurbarajpuree2992]

Your r really some of the best professors.

[@yoprofmatt]

Wow, thanks. Have a great day. Cheers, Dr. A

[@muzaffarsaleem154]

Very nice

[@BubuTts]

you saved me sir.

[@marveyinvite6512]

Why do you put a negative sign in front of the velocity and acceleration?

[@carultch]

Because the sign only remains constant, when taking the derivative of sine. The sign flips every time you take a derivative of cosine. Sine's derivative follows a certain cycle. Start with +sine. 1st derivative: +cosine 2nd derivative: -sine 3rd derivative: -cosine 4th derivative: +sine. Back where we started.

[@muzaffarsaleem154]

You are the

[@Crucifixionmachinemusic]

low pass filter on this please... geez... squeeky pen.

[@yoprofmatt]

I know, it's brutal. Low pass filter is good idea. So is NEWER PENS! Cheers, Dr. A

[@adityamehra6943]

sir v=Acoswt and not v=-Acoswt

[@galaxybidhan1034]

Sign comes along with derivative of cos