Translation Definition and 227 Threads

Homework Statement I throw a ball rolling and moving through the a flat surface. I may say that friction is slowing down translation motion, but increasing rotational motion, so when the ball stops moving, why is it not rolling? That's confusing me a bit. What can you say?

Homework Statement A 200kg body is supported by wheels @ B to roll freely w/o friction & by a sled @ A with which uk = 0.5. Compute the value of P to cause an acceleration of 0.02g. (g=9.8m/s^2) NOTE: Image not drawn to scale. http://www.geocities.com/timothybridge/kinOftrans.JPG...

Hello, this is my first post in this forum, I hope I've put it in the proper category. I'm currently programming a 3D sci-fi game and would like to simulate a little bit of physics during collisions. Nothing too complicated but I would like to be able to split an incoming force into its...

I know there are many people on Pf who speak french, so I take the chance. What is the french translation (used in the mathematical literature) of "embedded"?

Homework Statement 8) Suppose the following DNA sequence was mutated from 5'-AGAGAGAGAGAGAGAGAGA to 5'-AGAAGAGAGATCGAGAGA. What amino acid sequence will be generated based on this mutated DNA? A) glu-arg-glu-leu-leu-leu B) ser-leu-ser-leu-ser-leu C) ser-ser-leu D)...

Hello everyone. Thanks for all the help today. I know I have asked a lot of questions. This is my last one today. A spherical billard ball is sliding with a speed v_o. It has a radius R, mass M, and there is a friction coefficient mu. Determine the distance the ball travels before it...

I've been wrestling with this all day, and it's starting to drive me crazy; if you can help me out, please take just a few minutes to read and answer.:smile: I'm looking at S^2 in R^3 (the two dimensional unit sphere in space), and at a large circle going through the north pole as my closed...

Ok... I am asked how a vector's components transform under a translation of coordinates. From mathworld: Does that imply that the components used to describe the vector remain unchanged? If you and I see a car drive east at 50 Km/h and you are standing at what you call the origin, and I am...

I am hoping one of our French speakers will wander by and will help me out. I hope I am expressing myself correctly. In my paragraph I want to say: I am sure that you will adore Brittany. There are beautiful cliffs overlooking the sea. Brittany is famous for nice weather. The people of...

Hello, I'm trying to build a submersible, however for some reason the two propellers attached to opposite sides of the submersible, rotate at different velocities. I figure i might be able to use accelerometer data to help it go straight. My problem is trying to describe the curving almost...

Given: F(s) = (s-1)/(s+1)^3 Find: f(t) Solution: Using the equation that when F(s) = n!/(s-a)^(n=1), L^(-1){F(s)} = t^n*e^(at) So far I find that f(t) = e^(-t)*(-t^2+__) The book says that f(t) = e^(-t)*(t-t^2) How did they get the t?

I have been searching for an English translation of the article that appeared in Jyllands-Posten last September. I have found the original article in Danish here (without the cartoons): http://politiken.dk/VisArtikel.sasp?PageID=397712" Well, I think this is it but I cannot read it. I...

PLEASE help asap with quantum physics! Hi there, i need help in a couple of questions that I'm just stumped one of them : A) use induction to show that [ x (hat)^n, p(hat) sub "x" ] = i (hbar)n x(hat)^(n-1) - so far I've figured out this equation is in relation to solve the above eq...

Hello well i have a very basic doubt well when we have a rolling motion and surface is rough then what i used to do was write linear and translation equation and find f (Frictional force) Now is this frictional force same as static friction and can we write is as kmg where k is coeffecient...

Hey, Usually I have a general idea how to tackle a problem when posting on here. This time I am pretty darn lost :( When asked to find the equation of the line that passes through a point (1,1) and maps onto itself under the translation vector a = (3,2). I start with Ax + By + C = 0...

Let's say you have a metal rod in space that is 2 light seconds long. If you push one end of the rod, would they other end move 2 seconds later?

ok, so not that GD needs another thread or anything... but, i really have no idea what to do with this. some guy imed me today, and i have NO idea what he said. i think he said he was speaking in a swiss dialect of german... but i could be wrong. other than that i basically understood nothing...

A friend found this cartoon and thought it looked funny, even he has no idea how to read Korean (I'm pretty sure it's Korean, the email address is Korean). Could someone translate? Apologies in advance if the humour turns out to be off-colour or offensive, I can't take any ownership of...

Hi, I have a few questions about rigid body dynamics. I'm planning on making a 3D domino simulation similar to those domino rally games we all played as kids. I understand that the domino effect can get pretty complicated because it creates a chain of forces, but right now I'm having trouble...

i have a question about translation and compression/expansion y=√x ; y=√2x-5 how do u know u translate 5 units right first or horizontal compression by 1/2 first...?

Hi everyone I missed some content in my lecture about atomic structure of atoms. In the lecture, the lecturer talked something about "slipping" , "easy directions" and "slip systems"...I don't really catch these stuff in this lecture. But I could find these in textbook. What makes me most...

Hi! I see (on another thread) that we have people who can speak spanish. I'm doing a presentation in Spanish tomorrow, and I just finished the following translation (with google) from English to Spanish. Can someone please check it? English version phone number is not valid. spanish...

The Galilei group contains rotations, Galilean transformations, space translation and time translation. It is easy to work out generators for rotations and Galilean transfromations in matrix form. And they obey: [J^i, K^j] = i \epsilon^{ijk}K^k Can one work out the generator for space...

Hello. Could anyone give me a hint in this problem? There´s a disk (mass m ad radius a) rotating with angular velocity w0 (only rotation). If this disk is translating in xy plane, parallel with the y-axis with its center aligned at x0, how ca I describe the angular momentum L (t), and it´s...

OK i just want some clarification on what i am doing is right if it is wrong please help me first i have a template strand for a part of a DNA this is TAC CGA TGA CCA TCA GCC TGC now this strand is decoded via the process of transcription into mRNA where it moves to the cytoplasm...

"Principia Mathematica" Hi- I was wanting to know about the best translation of Newton's, "Principia" series. I want all three volumes, anyone who has read/bought these please inform me about it. Thanks.

I was wondering if someone could help me interpret a grade sheet I got in physics? Below is a slip that I received after our last quiz. I understand what the first three columns are, but the Percentile, Mean%, and SD is what is comfusing me. I really do not know where I stand, in this class...