Newtonian Definition and 327 Threads

I am trying to figure how barrier tunneling can be reconciled with Newtonian mechanics for large objects. I know that Newton’s Law work for large objects but not for small ones. Can anyone tell me why?

How would the probability distribution (|psi|^2) look for a Newtonian particle if it were confined in a box?

During many time i have searched a complete and rigorous derivation of Newtonian limit from GR but i found none. I suspect that it does not exist! I do not refer to that "supposed derivation" that appears in many textbooks of GR. I refer to a rigorous and unambigous derivation of Newtonian...

I have been wondering how the classical mechanics that I study in my textbook today was framed. Newton gave his laws of motion, but what about vectors, who invented those. We deal with freely falling bodies and acceleration due to gravity while studing kinematics. But I know that the law of...

Hi guys, I need help with the following problem I couldn't figure out: 1) A block of mass 2 kg slides along a horizontal tabletop. A horizontal applied force of 12 N and a vertical applied force of 15 N act on the block. If the coefficient of kinetic friction between the block and the table...

Let's start with the very base of Newtonian mechanics. It works like this : Suppose we work in two dimensions denoted by a x-axis and an y-axis. You can work in as many dimensions as you want because all you have to do is add a unit vector to the formula's, as you will see. Starting from the...

1-dimensional problem in Newtonian gravity- HELP! The problem is this: Given sun of mass M and a body of mass m (M>>m) a distance r from the sun, find the time for the body to 'fall' into the sun (initially ignoring the radius of the sun). Our first equation is therefore \frac...

The problem is this: Given sun of mass M and a body of mass m (M>>m) a distance r from the sun, find the time for the body to 'fall' into the sun (initially ignoring the radius of the sun). Our first equation is therefore \frac {d^2r}{dt^2} = \ddot{r} = \frac {GM}{r^2} . I am able to...

The problem is this: Given sun of mass M and a body of mass m (M>>m) a distance r from the sun, find the time for the body to 'fall' into the sun (initially ignoring the radius of the sun). Our first equation is therefore \ddot{r} = \frac {GM}{r^2} . I am able to integrate this...

I wish your help in creating a tabletop Newtonian physics demo. My friends do not believe that the centrifugal force is imaginary. They believe that, if you swing a pail of water in a circle over your head and let the rope go, the pail will sail *away* from you (as opposed to tangential to...

Hi, I'm having some trouble determining the formulae for banked curve problems, could somebody give me a general guideline on how to tackle these type of problems. My main problem is resolving the Normal reaction in terms of the angle of the inclined plain. Like i know that Ncos(angle) =...

Given the sun's mass (Ms = 2 x 10^30 kg) then Earth sun distnace (1.5 x 10^11 m) Newtons Constant G = 6.7 x 10^-11 Nm^2 kg^-2 use a GEOCENTRIC frame to explain the Earth's orbit (approcximate as a circle) This was a question on my test and at first sight i was shocked. But geocentric... if...

COnsider a large horizontal frictionless area on the Earth at phi degrees northern latitude. Through an impulse a particle is set in motion with velocity v and then left to move freely ignore all forms of friction. Find the period in the uniformcircular motion of the particle velocity v =...

I have two questions which I found difficulty in understanding: 1.) On a isosceles triangular-liked thing, with the base angles equal to 30 degrees, blocks X and Y are put on it on each side, with mass of X = 1kg, and mass of Y = 2kg, S is a spring balance of negligible mass( put on Y's...

Hello, I'm having trouble with the following question: There is a spherical hollow inside a lead sphere of radius R ; the surface of the hollow passes through the center of the sphere and touches the right side of the sphere. The mass of the sphere before hollowing was M . With what...

I have moved onto kinetic energy and momentum which I thought I understand. Apparently I need more assistance. Please review my questions and answers. Any suggestions and help will be appreciated. Thanks. 1. A sports car with a mass of 1000 kg travels down the road with a speed of 2 m/s...

Ok, this is a pretty hard problem I don't really know how to start. The set up is as follows, there is a block M and on the top edge of it there is a pulley, set up ontop of mass M is a mass m1, and that's connected to mass m2 that is on the right hand side of mass M. There is no friction and...

I read in a book that relativity and Newtonian physics don't work with each other or something like that. Like when Einstein founded Relativity, Newtonian physics were partialy disregarded because Newtonian physics didn't account for relativity. Can Newtonian physics be like converted to work...

:confused: I need more help please. I am moving along slowly in my physics quest to understand. The readings are more difficult and my understanding comes in and out. Please review, see how I did (answers marked with *) and make comments to help me learn. Thanks. 1. Which of the...

Please review the correctness of these basics physics questions. Add any comments or helpful hints to help my rudimentary understanding. I am truly a "physics novice." Thanks. Physics Problems – Round 2 1. An object moves with a constant speed of 20 meters per second on a circular...

Hello Everyone. This is my second posting regarding some introductory physics questions. I am studying physics and taking an on-line course. The last time that I posted I did so under classic physics. I thought that I would also try general physics. I hope this is not too fundamental for...

Can someone help me with these questions. I am a beginner in the study of physics and would like some help. I have attempted to answer these but would like to know if I am correct and a brief (very brief) explanation. Thanks in advance for your assistance. An object maintains its state of...

hola. i have to do a report comparing Newtonian physics to quantum physics. are there any good sites or other resources that you know of? thanks

A boat with initial speed v is launched on a lake. The boat is slowed by the water by a force, F=-ke^(bv). Find the expression for speed v(t). I've done the problem, but my answer seems too odd to be right...it may be my calculus. I've drawn a FBD, with the normal force and weight...

Say that a particle of mass m slides down an inclined plane under the influence of gravity. If he motion is resisted by a force f=kmv^2, how canyou show that the time requied to move a distanc d after starting form rest is t= cosh^-1(e^kd)/(sqrt kg sin theta) where theta is the angle f...

I ran across this paper some time ago. I would be interested in any comments that you may have. http://www.laboratory.ru/articl/hypo/eax060.htm

Hi, I am programming a game that involves controlling spaceships with a top-down 2d dimensional view. I want this game to have as realistic a physics model as possible. The idea is that you select a ship and then click on a destination. The ship then turns to an appropriate heading (turning...