Recent content by Garen

How can something that's "never been proven" be considered fact?

I got it! Thanks a lot for your help.

Oh, I thought that total linear acceleration was only the tangential acceleration...Would I have to include centripetal acceleration? If so, how?

Homework Statement The Attempt at a Solution I thought I could take the second derivative and get the angular acceleration from which I could use where ω is the angular velocity, is the linear tangential acceleration, and r is the radius of curvature. But for some reason, it didn't...

Maybe someone can refer me to another website to answer these questions?

No one? Really?

Anyone know where I'm going wrong?

Homework Statement Homework Equations [PLAIN]http://upload.wikimedia.org/math/7/7/4/7745116605c54295c6c3b696cea2d39f.png[/URL] The Attempt at a Solution I have gotten these problems wrong too many times. I know that I have to apply both the conservations of momentum and kinetic energy, but...

So you're saying that I set mv^2/r equal g/cosTHETA ?

Homework Statement Homework Equations The Attempt at a Solution The way I understood is it is by taking ma and setting it equal to mv^2/r and solving for v. With this I got answer choice number 9, sqrt(glsinTHETA). But it's wrong. Can anyone direct me in the right direction to...

Mandarin.

Understood, thank you!

Just wondering, if photon A and B are traveling towards each other head on (at the speed of light) why isn't the velocity of B relative to A exceed the speed of light? And no, it is not homework related.

Could you define r?

So what you're saying is that I set 9.8=v/(radius of cylinder) ? (3459.35)(9.8)=v 33901.73=v=angular speed in rad/s Is this correct?