Recent content by mrojc

Why is it 4g though? Should it not be 2g?

@DuckAmuck Might I ask how did you get that, if that's ok?

@DuckAmuck I converted it to rad/s

So you don't need to calculate another answer using the 14.5 cm?

Homework Statement A cylindrical container of water with a radius of 6.0 cm is placed on a phonograph turntable so that its outer edge just touches the outer edge of the turntable. The radius of the turntable is 14.5 cm, and the turntable rotates at 33 and a 1/3 revolutions per minute. How much...

Homework Statement Verify that a plane wave ψ(x) = Ae-ikx is a solution to the time independent Schrodinger equation for a free particle in one dimension. Can it be normalised? Why?[/B]Homework EquationsThe Attempt at a Solution My lecturer's notes are all over the place, which is frustrating...

https://scontent-lhr3-1.xx.fbcdn.net/hphotos-xat1/v/t34.0-12/12282819_10204148176339731_1402560635_n.jpg?oh=e147dab589d46be63cf24a1a026741fc&oe=56535411 I apologise for this being sideways but this was my calculations part.

I seem to be making a mess of things :H I'm inputting 0.125 m for the moment of inertia of the pendulum and 0.05 m for the spheres, and I am not getting the answers out. I'm definitely doing something really stupid and I'll be so annoyed when I figure out what it is!

Ok, just want to double check something: for R in the period equation, is that L/2? Or do I have to include the radius of the spheres in that R too? Thanks for all your help so far by the way, really appreciate it! :)

@gneill Hi, thanks for the diagram, that's the picture I had in my head. Am I on the right track with my equations or is there something I'm forgetting about?

Hi BvU, We weren't given m, and it doesn't make much sense to me either. When I read the question initially, that was the picture I had in my head. However, from reading it again, I think they're attached on the same end? Just simply because it said "one on either side of its lower end," not...

Homework Statement A pendulum consists of a light rigid rod of length 250 mm, with two identical uniform solid spheres of radius of radius 50 mm attached one on either side of its lower end. Find the period of small oscillations (a) perpendicular to the line of centres and (b) along...