plez help me with this harmonic motions problem !!!

[Omegachi]

its 3 in the morning and i can't get these physics problems please help.

the period of an oscillation particle is 8s, and its amplitude is 12 cm. At t=0, it is at its equalibrium position. Find the distance traveld during the interval (a) t = 0 to t = 2s (b) t =2s to t = 4s.

 

[Skyclad1uhm1]

Started a bit too late on your homework?

You're not even promising bush on this one!

 

[Omegachi]

nope, no bush this time

its 3:40 in the morning and the assignment is due tomorrow helpppp!!

 

[minendo]

http://hyperphysics.phy-astr.gsu.edu/hbase/shm.html#c1

See if that helps.

 

[Omegachi]

no, that does not help

please someone.....last chance before i go to school...!!!!

 

[Omegachi]

bump

 

[own0rz]

Don't know if this is too late but oh well...

Equation of a harmonic oscillator is x(t) = Acos(wt) where A is the amplitude and w is the frequency of oscillation.

w = (2*pi)/period = 2*pi/8

Plug A and w into equation, plug in initial time and final time, and take the difference between the distances. That is the displacement. Hope this helps.

 

[Omegachi]

thanks own0rz, you are a life saver. You came to my aid just in time....i am going to class now, i can finish the problem on the way there thanks!!!

 

[MichaelD]

*bows* You guys rocket scientists or something? Sheesh. I just find it incredible that human beings can actually SOLVE these equations.

I know math is very "logical" but to me, these numbers and letters are just so imaginary...if that's the right word. PI/8? Yep, I ate the pie. me\<------not smart enough to be here...leaving now.