Movement Definition and 617 Threads

Hi I don't have idea about solving it, If anyone can give me a descriptive answer or solve it for me, it'll be appreciable The flywheel of a prototype car engine is under test. The angular position θ of the flywheel is given by θ = (3.0rad/s3)t3 and the diameter of the flywheel is 36cm...

I've been playing around with dead reckoning stuff on an rc plane by attaching a gps, 3 axis gyroscope, and 3 axis accelerometer to the plane. When the plane isn't turning, my algorithm works pretty well however when I enter a turn, the readings get way off. Specifically, the plane appears to...

Hello, first of all, excuse my English. I have no experience witch describing mathematics problems in English. I have a movement with sine acceleration. I need to get equation of velocity depending on track (I am not sure if that's the right expression in English - on the traveled distance)...

Hi everyone Homework Statement Take a look at the drawing. Now I found out the differential equation for this is: \mu \vec{r}''=-k \vec{r} mu is the reduced mass Now I shall show, with using the generel solution for this differential equation (in cartesian coordinates), that the...

I had a thought-experiment I was pondering the other day. If you could somehow isolate a single atom inside a vacuum inside a Faraday cage, how would that atom behave in terms of translational movement?

I'm a machinist and i want to make a hydraulic circuit for a personal project. I'm sure the type of movement i want to make already exists i just don't know what it would be called. I want to make a bi directional movement that from a center postion encounters a constant resistance as it moves...

I just derived a little formula of protons moving in a magnetic field. With the symetry etc I have I get this: p = qrB Now I want to calculate the angular as a function like this: p = constant * B Where p is Gev/C, r is in meters. I don't know what numbers or better what form B and q should...

TED knocks it out of the http://www.ted.com/talks/bunker_roy.html?utm_source=newsletter_weekly_2011-10-19&utm_campaign=newsletter_weekly&utm_medium=email" once again. Rhody... :approve: P.S. Pay Attention at 11:20.

Hi, I am a tennis coach and not very sciency, so if there's a simple answer to this question rather than a crazy physics answer it would be much appreciated. I hit the ball, some of the energy from my racket "pushes" thru the ball creating momentum, another part of the energy from my racket...

I was sat in my car recently watching many aircraft in the sky making patterns with their emmissions. One that stood out was a fairly acutely curved one. At first it appeared to start in alignment with the partion that divided the front and back window of my car. After about 15 minutes it had...

Referring to following images, when I jump up and down at 1/4 position on the bridge, I can feel the bridge vibrated a lot at this point, but when I jump up and down at 1/3 position on the bridge, I cannot feel any movement on the bridge at all. Does anyone have any suggestions on what cause...

Assume a stick of length 15*3*10^8 metre. One end points towards me, at the other end we place a ball very near to the end of the stick. If i push the end pointing towards me with some force, instantaneously the ball will be moved(~). At the same time, a light beam emanating...

I'm kind of embarrassed I can't figure this out on my own... It's to be used to determine the movement of objects in a game (2d space). This is quite obviously something that has been solved many times over, but I haven't had any luck searching for an answer, so I thought I'd try here! Homework...

Let's say you have 2 charges of magnitude 2C except 1 is + and the other -. They're separated by 2m. dipole moment=p=qL Which q do you plug in there?

Hi, I'm finished studying ondulatory and I have maany questions I still don't understand. I would be thankful if someone could help me in that, Because I'm pretty lost. I'm going to ask them in letters (A, B, C...), each one is a different doubt.A man has photographed (with a fixed...

Hi, I am trying to use calculus to analyze the following puzzle. I already know the answer to the puzzle -200Km. What I want to be able to do is to model or calculate distance the fly travels in a particular sweep. See the attached Excel file to better understand what I mean. I feel...

If an air hockey table is turned on and one end is elevated so the hockey puck slides to the other end freely. Would it take longer for a heavier puck to reach the end of the table before a lighter puck or vice versa?

Is the movement of winds due to coriolis or centripetal force? Or is there no way to tell, like for example for tidal forces, there is no way to tell wether they are caused by centripetal forces or gravity. (At least that is how I have understood the problem.) Earth is like a huge turntable...

Hello, I'm trying to get an image of a reasonably detailed model of electric current of standard close circuit with an electrochemical battery into in my head, well to an A level standard, I’m a fairly visual learner so image descriptions help :) I’m also very new to physics, I’ll try and...

Hi, I've got conflicting impressions on the motion of particles in tokamak reactors. Wikipedia says that they generally follow the poloidal field lines due to the Lorentz force, whilst another site claimed that the promising results were due to the random motion of the particles within the...

They say it is impossible to know whether you're moving at constant velocity or at rest unless you look outside. How about this:(no gravity please) I take two known charges and hold them at a distance one above the other. They repel.That is l I know. Someone else outside says,that the...

I would appreciate some help regarding the movement of an electron in a plane-wave linearly polarized electromagnetic field. Its simple enough question, but I am not sure what approach to take. Let's say the electron is at rest in our frame of reference and the plane wave is continuous...

A student gets a 3 kg mass to oscillate up and down on bottom of a light vertical spring by pulling her hand up and down on the top end of the spring. The spring is a real spring with a spring constant of 94 N/m and a damping constant of 0.6 N sec/m. (a) At what approximate frequency should...

i'm trying to conclude on HOW this would be possible... though its a paradox doesn't it seem very possible? in case you don't know what it is its saying movement is immpossible. Example to get from point a to point b you have to go halfway but before you get from point A to A1/2 you have to get...

Hello guys, I want to know if I apply a DC voltage to the wire winding then what will happen to the iron piece and why? What if the voltage happens to be AC?? I think that the iron piece will move but how and why, I am not sure... Thanks for any help

Relativity Explained Via Movement, Not "Time" There is no clock that will measure time independently of movement. And conversely, nothing ever happens that does not move. Why then do physicists persist in using the notion of "time" in explaining relativity? It would be so much easier, more...

Homework Statement http://img34.imageshack.us/img34/9415/rock1x.jpg Shaft's AC movement is regulated by runways A and B. The angular velocity of the shaft is 3 rad/sec, counterclockwise. When angle psi = 40 degrees. Calculate: A) The velocities of pistons A and B (Va, Vb) B) The velocity of...

I almost all movies where you could see an animation about an asteroid, they move in a very distinct way. I don't know how to explain better, but I think what we can see in the movies is that the asteroid is rotating around not one, but around two or three axis at a given time. What is this...

Homework Statement http://img20.imageshack.us/img20/4519/objectssss.jpg A body whose weight is 12 [kN] progresses upwards on an inclined plane, slanted to the horizontal line at angle alpha. Force F, acting on the body, parallel to the inclined plane, remains constant during the entire action...

Homework Statement I have this homework due for tomorrow and I am a bit stressed about it I really would appreciate some help I don't understand the concepts involved. A particle that in t = 0 is in the origin, moves in the xy plane with a velocity : v=[(2.0m/s^2)t -(1.0m/s^3)t^2] x -...

I'm trying to understand the movement of particles due to quantum mechanics. I made this image. It is a magical receptor box. Every time an H atom strikes a receptor, the letter associated with that receptor shows up as a read out on a computer. For example if a H atom hits the top receptor, it...

I have a doubt that I cannot resolve: With a 10kg stop object on a surface I apply a 100 N force to move this object. The static friction coefficient is 0.5 and kinetic coefficient is 0.3. I would like to know the maximum speed of this object and the distanced covered till stop. I know the...

I was thinking of new ways to harness windenergy. A sail produces a lot of power, could you somehow harvest this energy, if you had a modern computercontrolled kevlar (or something akin) sail attached to the ground; i.e having no forward movement. Pressure to electricity or something like...

As I watched a few cyclists zoom by today, I started thinking about the mechanics behind the motion of a bicycle. I will now run through the work I have done in analyzing it. Please tell me if I have made any glaring mistakes in my logic and let me know what you think. Purpose Evaluate the...

The "birther" movement: racist? total crap? There exists a group of people who seek to cast doubt on the legitimacy of Barack Obama's citizenship and his birth certificate. I have searched very diligently and still have not found a single quantum of credibility to this theory. Sure, any...

When we move any part of our body for e.g our hands, obviously, our brain contro9ls each and every movement of our body and the processes which are involved in it. The question is that how does the neurotransmitter get involved in such movements ? I mean, it is understood that there are...

Hi, I have to find the best approach for tackling a problem for trying to recognize physical movements - with an iPhone in a pocket - like walking, stopping, turning left/right, sitting. The ultimate goal is to recognize urban street behaviour, mostly regarding traffic lights: is it possible to...

If someone were outside of a spaceship, attached to the hull (physically or magnetically, I don't know), and the ship started moving (not at lightspeed or anything, mind you, just cruising) what would happen to the person? Sorry of this is in the wrong place. This subject isn't my forte, and...

Bear with me, I am not a scientist. Also, this is NOT a question about free will. I wanted to know if particles ever move in random directions. Since I know there will be an issue of semantics here, I will give some examples: Two separate universes (when I say universe I mean, "area where stuff...

Homework Statement A uniform rod of mass m and length L is released from rest when the angle \beta is 60º. If the friction between the bar and the surface is such that prevent slippage of the same get: a. The angular acceleration of the bar when set free. b. The contact force N and friction in...

Hi I have a thin box (e.g. like an A4 book) I would like to shake up and down sinusoidally. At the moment I have a flywheel connected to a beefy motor. I have tried using a cam to do it but it has proven not so ideal. What other methods can I use? Thanks

Homework Statement I have this exercise in physics, that i just don't know how to do. "A child is spinning a 100g toy, which is attached to a 30cm long rope on a vertical level. How much force does the rope have to handle?" Well, the problem for me is, that there's no time given, how...

Assume that we have a parallel plate capacitor filled with an imperfect dielectric. Then we apply a DC Voltage between the plates and expect some leakage current through the capacitor due to the dielectric having non-zero conductivity. My question regards the movement of electric charges...

Hello and thanks for reading! You'll have to excuse my general ignorance of physics and the jargon, and also if I am not posting in the correct spot (I looked up astrophysics and it seems to be closest to my inquiry) Backstory: This is not for school or anything like that. I have for...

i was just reading an article i got linked to from google, about the North magnetic poles location is moving towards siberia currently at about 45k per year, which has increased over the past 100 years from around 15k per year, it was explained that it was possibly caused by density variations...

Homework Statement Hello everyone, i have been stuck on this question on the Physics year 12 Nelsons textbook, and it is pissing me off because I've been working so hard on it and i can not get it. It is in the chapter of Movement in one and two dimensions. The question is: A person...

I'm not very good at science, let alone physics so can someone please help me with my project. Its about animals movement I think i am going to do it on cats, rabbits, horses and birds. Any information would be fine I would like to know stuff like e.g. what does a horse do when its about to...

Homework Statement A material point A of mass m has a rectilinear movement on the horizontal axis 0x. It is subject to the action of a constant power force P and to a force due to air resistance of \betamv2. It starts at a still position on x = 0 for t = 0 in the direction of +x. Find the...

Homework Statement A student proposes to measure the gravitational constant G by suspending two spherical objects from the ceiling of a tall cathedral and measuring the deflection of the cables from the vertical. Draw a free-body diagram of one of the objects. If two 100.0-kg objects are...

Now, I am very dull, but something that has made me ponder for quite some time is movement and how you define it. As I've understood the movement of the atoms is what can make an object feel cold or warm or maybe even painful, and when you drop an icecube in a cup of water it will cool down...