Recent content by Elvis 123456789

Homework Statement so I was going over my notes on classical mechanics and just started to review rotation matrices which is the first topic the book starts with. On page 3, I've uploaded the page here The rotation matrix associated with 1.2a and 1.2b is \begin{pmatrix} \cos\theta &...

Homework Statement Before the discovery of the neutron, it was proposed that the penetrating radiation produced when beryllium was bombarded with alpha particles consisted of high-energy &gamma rays (up to 50 MeV) produced in reactions such as α + 9Be --> 13C + γ a.) Calculate the Q value for...

The part that sort of bothers me is the "h" part in mgh for U(x). For continuous bodies I am used to having to integrate over the whole part that contributes potential energy instead of just taking the position of the center of mass.

Homework Statement A rope of length L is falling off an incline. Part of the rope is still on top of the horizontal surface. There is no friction between the incline and the rope. The incline is at an angle theta above the horizontal. a) What is the magnitude of the acceleration of the rope...

I am currently in the process of introspection and reflection in order to determine whether I will apply to graduate school in physics or mathematics. I, like dkotschessaa, also view mathematics as more "pure" and more "perfect" than physics. On the one hand, there is physics which appears more...

I can't really see the details of your diagram too well, but why are you assuming that block 2 has an acceleration in the x-direction?

On the relevant equations section, you wrote conservation of energy, yet you did not use it.

Post the entire problem statement.

You must attempt the question yourself. Get as far as you can and then post that attempt here so that the homework helpers can see where your misunderstanding comes in.

That is the same result you derived; he just went ahead and actually solved for "d".

Do you know what it means for a vector to have a unit length (i.e. to be a unit vector)?

Your method looks good. The answer should be correct.

Yah I've thought about dropping the intro to advanced math class, I just haven't because I really want to get into proof based mathematics a lot more. Not to mention that the class is a prerequisite for higher level math classes such as topology and real analysis. The PDE's class is taught by...

Hello everyone. So I wanted to get some opinions on what some of you thought was a better choice, as far taking PDE's or classical mechanics 2 goes. First let me start off by giving a little info; I've already taken calc 1-3 and ordinary differential equations, physics 1 & 2...

I have a factor of 2 in the front to account for that. Is that not right?