Classical mechanics Definition and 1000 Threads

Homework Statement The problem is number 3d in the following file: http://phstudy.technion.ac.il/~wn114101/hw/wn2010_hw06.pdf The Attempt at a Solution I think the difference comes from the using of the momentum p. In the Jaccobi function, we use only coordinate x and its...

b]1. Homework Statement [/b] A cylinder (solid) of radius a rolls inside a fixed hollow cylinder of radius 4a; inside a homogenous gravity field. Find, langragian using the rolling angle of the little cylidner as a generalized co-ord. angular frequency of small oscilalations about...

Hello all, Doing this week's problem set, I realized that I have become totally lost in my classical mechanics class. Part of the problem is that my other classes are also very time demanding that I end up putting classical mechanics off because it is so dry (for me at least). The other...

https://www.amazon.com/dp/189138922X/?tag=pfamazon01-20 Has anyone ever read this book? It looks like a bargain, good reviews, low price. What do you think of it? Is it a good mathematically oriented physics book?

Homework Statement A nucleus of mass 20mu (where mu is the atomic mass unit 1.66*10^-27) is moving with a velocity of 3*10^6 ms^-1 when it breaks into two fragments. In the course of this process internal energy is released from within the nucleus and the kinetic energy consequently increases...

Tell me you love me. http://www.phys.psu.edu/~lammert/419/notes.html" http://www.physto.se/~ingemar/anmek.pdf" http://www.phy.ohiou.edu/~rollinsr/phys605/" http://farside.ph.utexas.edu/teaching/336k/336k.html" http://www.damtp.cam.ac.uk/user/tong/dynamics.htm"...

Hi All, Kindly suggest me an alternative book for "Classical Mechanics by Goldstein". I am finding it little bit difficult to understand so if i can find any alternate book which is little less complicated than Goldstein it will be helpful for me. I am concentrating on the below mentioned...

I've looked all over the internet, and can't find a decent explanation. Could someone please explain why the stefan-boltzmann radiation law of I = oT^4 be explained in classical mechanics rather then quantum? It's urgent, sorry to be pushy. Cheers.

Suppose that the electron in the hydrogen atom obeyed classical mechanics rather than quantum mechanics. Why should such a hypothetical atom emit a continuous spectrum rather than the observed line spectrum? So far I have: quantum mechanics deals with the smallest possible piece of a system...

I'm a biochemistry major with most of my requirements out of the way. Fall term my schedule will be: Physical chemistry, intro to real analysis (junior level). This is 8 credits, but to maintain full financial aid I need 12 credits. I recently found out that I am 12 credits away from a physics...

Homework Statement F=force, a=acceration, m=mass, U potential energy, P momentum, E=energy How do derive 2 and 3 from 1( see below). Homework Equations 1) F=ma, 2) E= (p^2)/(2m) + U, 3) ma = -del U The Attempt at a Solution I try to understand why U pop into the...

Graduate course lecture notes - Excellent! http://math.ucr.edu/home/baez/classical/texfiles/2005/book/classical.pdf" jf

Homework Statement Consider the pulleys system in the picture. Assume both pulleys are frictionless. Assume the rope is massless and inextensible. Find the acceleration of the mass m_2 Homework Equations The Attempt at a Solution I have solved the same problem with massless...

Hallo, Why does dp*dx>>h represents classical mechanics state? Thanks, Omri

Homework Statement A small ball is attached to a massless string of length L, the other end of which is attached to a very thin pole. The ball is thrown so that it initially travels in a horizontal circle, with the string making an angle \theta_0 with the vertical. As time goes on, the string...

Howdy! I am taking Phyiscs GRE next semester and won't have taken classical mechanics by the time I take the test. I am not comfortable with the situation. Can anyone please suggest me a good preparation strategy for me ?

Homework Statement Give the equations of motion of the following system: http://www.jelp.org/imagenes/mech.jpgHomework Equations So, i assume the following cases (the diagram i so deficient). 1) Black Point (x1) is fixed 2) There's a force applied at x1 (black dot) 3) The position of the...

So everyone here already knows how important understanding classical mechanics is so that brings me to my question; What is a good introductory mechanics book that has nice complete mathematical derivations, good well-written physics explanation, and large breadth in terms of subject matter. In...

Hey guys, I am an undergraduate junior physics major currently enrolled in PHY3220 (Classical Mechanics) and we are using the textbook by Fowles and Cassiday titled, "Analytical Mechanics." However, I am looking for a second Classical Mechanics textbook that I could use as a reference since...

Homework Statement How could u find the drag/friction due to air on a A4 size page dropped perpendicular to the ground. There are about 20 sheets and is dropped about waist height. The tricky thing is no instruments are aloud. Only your senses... Homework Equations F=-cv where c is...

Hello all, I'm having trouble with the following problem: Pb: A chain with constant density and infinite length is slipping down from the table without friction. Determine the position of the tip of the chain at time t. I know there are a few ways to approaching this problem, namely from...

Homework Statement Hi all. We have that the work W equals Ui - Uf (respectively the initial and final potential energy). Let us say that a stone has a height 10 m, and falls down. We say that positive x is upwards. Now W = \int F \cdot dl = F(x_f-x_i)=U_f-U_i, since F and dl both point...

I'll take classical mechanics next semester and I want a book for this course. I choose two books but, unfortunately, I can buy only one, Kibble or Goldstein. I know Goldstein is going to be better but Kibble's book is much cheaper (17 pounds @ amazon.com). Does Goldstein worth it? Could you...

Homework Statement An object is moving in one-dimensional space with a potential funciton V(x) = constant. Find the equation of motion, x(t). Use x_0 as the initial position and v_0 as the initial velocity at t=0. Homework Equations initial position = x_0 initial velocity = v_0 The Attempt...

Hi, I'm looking for a good classical mechanics text for self study, roughly around my level. So far I've taken courses in calculus based physics courses, ( first year mechanics and E&M ) multi-variable calculus, ODE's and linear algebra. I have self taught myself real analysis, and a...

Homework Statement A disk moves on an inclined plane, with the constraint that it's velocity is always at the same direction as it's plane (similar to an ice skate, maybe). In other words: If \hat{n} is a vector normal to the disk's plane, we have at all times: \hat{n} \cdot \vec{v} = 0. Also...

Homework Statement Consider a rocket subject to a linear resistive force, f= -bv but no other external forces. Using the equation mv'= -m'*vext+Fext show that if the rocket starts from rest and efects mass at a constant rate k= -m' then its speed is given by v=(k/b)vex[1-(m/m0)^b/k] The...

1. The mass of the sun is decreasing as dM/dt=-constant .M Find [dr/dt]/r for the earth Homework Equations [b]3. I tried using M=M0-alpha. t and then separating the variables in the equation GMm/r^2=mdv/dt. I don't knot the right way to solve this. Plz tell me how to solve this...

[b]1. It is problem for kibble book, classical mechanics. I star with mass M traves through cloud of particles with density ro. Particles that collide with a star are trapped by it. Derive the expression for mass increase of the star dM/dt. The Attempt at a Solution Since all particles that...

Hello: In Classical mechanics, the lagrangian of a system is defined as the kinetic energy minus the potential energy, but is there any physical meaning of the lagrangian ?, and if there is, What is it? Regards

Homework Statement I am self studying Chow's Classical Mechanics. I have realized that I am at my best if I leave no stone unturned Homework Equations \hat e_t . \hat e_t = 1 Understood d(\hat e_t. \hat e_t)/dt =0 Also understood But 2\hat e_t .d\hat e_t/dt=0 Not...

Dear all, I am wondering if Introduction Classical Dynamics of Particles & Systems (5 ed.) by Marion and Thornton is any good? I have already studied year 1 Classical Mechanics course, using University Physics by Young and Freedman. May I know if Marion&Thornton book is of higher level and...

Homework Statement Find the expression for the forces on support A and B. Fax, Fay, Fbx and Fby. Homework Equations I'm thinking; Moment , M=F*l Fa^2=Fax^2+Fay^2, same for b Fax=Fbx The Attempt at a Solution (1) M = F*L1 Since I know that the sum of moments around the...

Hi, If these questions have been asked before, then please point me in the right direction. 1) Find the Mass of an object that is suspended by two strings. The tension on String one is 34 N and is held at a 40 degree angle with the horizontal (i.e., if a line was drawn through the center of...

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I'm an EE student and I am going to take modern physics next semester, and then would like to take classical mechanics. I was enrolled for about a half week in a classical mechanics class but it seemed really hardcore and I wasn't prepared for it. (The first homework problem was: Describe the...

Hi! This is my first post here. I'm currently studying analytical/classical mechanics and have some problems understanding how the Lie algebra is formed in relation to the SO(3) group of rotations. My problem is this: Given a matrix representation R of some rotation around a fixed axis, we...

This is an unusual book which uses the Scheme programming language to functionally describe the various components of classical mechanics. I would say it is at the level of a graduate mechanics course (think Goldstein), however students with a strong programming background will find it easier...

[SOLVED] classical mechanics marion and thornton Homework Statement At the beginning of section 12.4 in marion and thornton, they say that \dot{q}_k and [itex]\ddot{q}_k[/tex] are both 0 at equilibrium, where these are generalized coordinates. Can someone please explain how they got that the...

A complete set of lecture notes for an lower-division classical mechanics course. Topics covered include one-dimensional motion, three-dimensional motion, Newton's laws of motion, energy and momentum conservation, circular and rotational motion, statics, planetary motion, oscillations, and wave...

Three equal masses arranged in a equilateral triangle are connected by 'springs' with force constants 'k' the coordinates of the masses are: mass 1 at [0, \sqrt{3}/2*L] mass 2 at [L/2, 0] mass 3 at [-L/2,0] find the normal mode frequencies. The only part i am having trouble with...

I will probably be taking both CM I/II and E&M I/II before I graduate, but I'm wondering is it a bad idea to take E&M before taking CM? I don't think I can take both at the same time this coming year so I have to pick just one.

[SOLVED] Classical mechanics: ball rolling in a hollow sphere Homework Statement This problem is from Gregory: A uniform ball of radius a and centre G can roll without slipping on the inside surface of a fixed hollow sphere of (inner) radius b and centre O. The ball undergoes planar...

[SOLVED] Mass on a spring Homework Statement This problem is from Gregory’s Classical Mechanics A light spring of natural length a is placed on a horizontal floor in the upright position. When a block of mass M is resting in equilibrium on top of the spring, the compression of the spring...

Homework Statement A uniform circular cylinder (a yo-yo) of radius a and mass M has a string wrapped around it that can unwind without slipping. The yo-yo moves in a vertical straight line and the straight part of the string is vertical as well. The other end of the string is fastened to a...

Homework Statement Problem: Derive eigenvalue equation of motion of a system undergoing free small oscillation in three dimensional space. Homework Equations The Attempt at a Solution I want to know if I have correctly written the values of T and V--- \ T=\frac{1}{2}\ m...

i'm not even sure where to get started with this one because the thorton and marion classical dynamics book is really awful. BEGIN PROBLEM Suppose a baseball, which has a mass of 150 g and a diameter D of 7 cm is released from rest. For a sphere in air, the dynamic drag is F_d=.25 D^2 V^2...

Homework Statement A single particle of mass m is revolving at steady speed in a circle of radius a about the z axis at a height h above the origin. In this situation the particle has angular velocity w = wz 1 Show that the angular momentum L is not parallel to w 2 If a second particle...

Homework Statement I need to write a C program to simulate physics problems. My job is to write a code , in which I give the user a function F(x) = ax^n + bx^(n-1) + ... , and user inputs the coefficients a,b,c ... and my computer code should tell whether the given force F(x) is conservative...

Homework Statement My classical mechanics book (Goldstein) talks about apsidal vectors in the context of central force problems and elliptical orbits. I cannot find where the book defines this term and it is nowhere on the internet. Has anyone heard this term before? Homework Equations...