1. Sep 5, 2014

PhysicsKid0123

I have a homework problem I need help with. I don't want the answer given to me since I know I can answer it with the proper guidance.
How should I approach this problem?

This is what I have so far. How should I approach this? Did I start off right?

2. Sep 5, 2014

PhysicsKid0123

Sorry thought this was the homework section

3. Sep 5, 2014

davenn

hi there

can you please rotate and repost your images so I don't have to lie down to try and read them :)

cheers
Dave

PS have asked for it to be moved to homework section

4. Sep 5, 2014

ShayanJ

We have:
$x=\alpha \cos{(\omega t-\phi)} \Rightarrow \dot x=-\alpha \omega \sin{(\omega t-\phi)}$
Let's take $\delta=\omega t-\phi$, then we can write:
$\sin^2 \delta+\cos^2 \delta=1 \Rightarrow (\frac{\dot x}{\alpha \omega})^2+(\frac{x}{\alpha})^2=1$.
Is it enough or I should explain further?

5. Sep 5, 2014

PhysicsKid0123

Mhmm let me see what I can extrapolate from this. Give me a moment... Thanks btw.

6. Sep 5, 2014

PhysicsKid0123

Okay! I will take a better picture!

7. Sep 5, 2014

Staff: Mentor

Since this has been reposted in the HW section, I will close this thread.