Newton Definition and 525 Threads

My philosophical prejudices lead me to believe that the necessity of dark matter/energy implies a shortcoming in our understanding of gravity. Clearly, there are shortcomings at the quantum scale, but this is another matter entirely. I ran across an article on physicsweb where a scientist...

Hello, please help me I have a question regarding drag force and Newton's law of motion. This is quotes from online pdf files from University of Toronto Scarborough. "the terminal velocity is F/b , where b is drag constant Let’s solve the equation of motion and see how this is reflected...

Homework Statement a. Planet "P" has a mass that is 2.89 times that of the Earth, an equatorial radius that is 1.89 times that of the Earth and is located 7.8 times further from the Sun than the Earth is. What is the amount of force applied to the planet by the Sun? b.what is the orbital...

This is something I read recently e / Example 5. Momentum and kinetic energy in firing a rifle example 6 The rifle and bullet have zero momentum and zero kinetic energy to start with. When the trigger is pulled, the bullet gains some momentum in the forward direction, but this is canceled...

Homework Statement A block of Mass 0.5Kg rests on the inclined surface of a wedge of mass 2Kg. The wedge is acted on by a horizontal force that slides on a frictionless surface. note that the force is towards the box on the incline and not away from it. a) If the coefficient of static...

Homework Statement Two blocks attached by a string are at rest on an inclined surface. The Lower Block has a mass of m1=0.2Kg and a coefficient of static friction u=0.4. The upper block has a mass m2=0.1Kg and a coefficient of static friction u=0.6. The angle theta is slowly increased...

Homework Statement 1. In the introduction to the Mechanical Universe, what did Newton destroy beyond repair 2. What did Newton create to take its place? Homework Equations I don't think this question has to do with equations, as it is only worth one mark. The Attempt at a...

[SOLVED] Newton Open Ended Question Homework Statement According to Newton's Law of Universal Gravitation, the force exerted by the Earth on an object is directly proportional to the objects mass According to Newton's Second Law of Motion, the acceleration of an object is directly...

HI! I've looked everywhere for help for this question but i just can't seem to understand it...:frown: The question is below. It is from the SIN contest from 2001, question number 4. I wish they would have the answers posted up on the Waterloo website, but they only have the most recent...

Sorry if you have already covered this subject. Is it possible to apply the formula F = -GMm/R^2 for a relativistic particle substituting m with its relativistic mass?

Homework Statement If the maximum tension either rope can sustaine without breaking is 5000N determine the maximum value of the hanging weight that these ropes can safetly support. the diagram shows two ropes connecting at a node which leads down to a weight, the first rope on the left is...

[b]1. "two objects with masses 5kg and 2kg hang .6 m above the floor from the ends of a cord 6m long passing over a frictionless pulley. Both objects start from rest. Find the maximum height reached by the 2kg object. Homework Equations Newton's laws. Kinematic equations. The...

Hello! How do you calculate or determine Newton meter force requirement and rpm's for an electrical motor in the following example: A device that utilizes a shaft that is 2 inches in diameter and 6 feet length. It needs to be able to lift 10 pounds and distance of 7 feet in 6 seconds. I...

Energy (E) = Work E = Fs E = mas E = msv/t --------(because a =v/t) E = mvs/t But s/t = v .: E = mv2 -----------(1) But according to Isaac Newton E = mv2/2

Okay, so I get the concept behind Newton's version of Kepler's 3rd law, but everytime I go to do a problem with it, I get totally lost. This may be because I have never seen one done in a way that did not totally confuse me... I think it might be best if I just ask one of the questions that's...

An applied force of 50 N is used to accelerate an object to the right across a frictional surface. The object encounters 10 N of friction. Use the diagram to determine the normal force, the net force, the mass, and the acceleration of the object. (Neglect air resistance.) this is the image she...

My question is..how could we use Newton method (or other iterative method ) to solve: Nx^2 -y^2=1 ?? :confused: :confused: The main problem i see is that the equation before could have some "non-integer" solutions note that (1) can be put in the form: \sqrt(Nx^2 -1)=y

I got very confuse about this questions and really appreciate your help on this... many thanks in advance. A tow truck of mass 1000kg is towing a car of mass 600kg and both are moving at a constant velocity of 60m/s. The total resistance to the motion is 4000N and half of this resistance...

I have a picture provided. You can assume that the table is frictionless. I need an expression for the acceleration of m1.

Is certain that this law not fulfilled in the case of two charged particles moving in perpendicular directions (the force exerted in the particle A by the magnetic field of B is not equal to the exerted one in B by the magnetic field of A) ? Why? Bye!

The problem is this: There are two blocks of unknown masses M1 and M2. M1 is sitting on a frictionless table and M2 is attached to m1 by a massless string and is hanging over the edge over a pulley. If m1 is four times more massive than m2, how far will m1 travel in 0.633 seconds? So far I've...

hi there i have a question in which i can't get the answer i will show my work on what i did, if anybody can help , that would help a lot . here is the question: only two forces act on an object (mass= 3kg) x=40N a=60N is at 45 degrees above the horizon y= ? find...

Demonstration binôme of Newton for -n: http://www.speedyshare.com/461571716.html

the problem: a plane with a mass of (3.5X10^5)kg is landing. If the speed is 27 m/s and the net braking force is (4.30X10^5) N then a) what is the speed 7.5 sec later? and b) how far has it traveled in this time? this is how i started, because speed is distance/time i felt that it would be...

Newton's third law states when two bodies interact they exert equal but opposite forces on each other. Now we apply this concept to gravitational attraction between, say, the Sun and the Earth. Sun exerts a gravitational force on Earth, and thus Earth also exerts a gravitaional force on the Sun...

Hey. I am having a little trouble differentiating between Newtons per second (N s^{-1}) and Newton seconds (N s). I know that N/s is a measurement of a certain number of Newtons over a period of 1 second, but could someone please explain what a Newton second is? Thanks, Dan.

Hello, I was just searching online and discovered this great forum. Please I need help in sorting out a problem with a non-central potential and Newton third law. This is not a physics homework problem. I'm a graduate student working on this equation as a reserch project and there are...

Hello. I've been approached with a problem of explaining why Newton Raphson method fails for some functions. I came across a book in Numerical Analysis (Kellison's book) that the method may fail if 1.) f'(x)=0 2.) The initial value is taken at a maximum or minumum point, 3.) The initial...

This issue came up in a recent thread and I recall that it came up in another thread about a year ago. I think it deserves its own thread. If it already has one and you know of it, please direct me to it. Does acceptance of Einstein's theory entail rejection of Newton's? On page 98 of...

How did Newton arrive at the conclusion that the force of gravity is directly proportional to the product of the masses of two objects, and inversely proportional to the square of their distance? I know that he was the first to realize it's gravity that keeps the planets in orbit, but what...

Hi, I need a help with responding one question from my calculus classes... Lef f: [0, + infin.) ---> R be a continuous function and let exist the finite Newton integral of f(x) dx from 0 to +infinity. It´s neccesary that f is bounded? Thanks for any help. :wink:

I need some help on the two questions: A 850 kg dragster, starting from rest, attains a speed of 24.6m/s in 0.49s. 1. What is the size of the average force on the dragster during this time interval? Do I just use the equation F=ma to find this answer?...because I found the acceleration...

emm, i m new member here maybe i m stupid and young enuf to ask these question, but i seriously nid help from u all to explain to me 1st, if we standing on a weighing machine in a lift, when the lift accelerate downward, the reading of W.M. wil decrease?and when accelerate upward the reading...

Once in while I read that Newton laws do not forbid the unbreaking of eggs. The only reason that we don’t see it and similar events is the second law of thermodynamics. Is that correct? If an egg falls off the table, isn’t then the reverse process also forbidden by Newton, then how should the...

I am detaching this from the "All the lepton masses..." because there are not leptons anymore, and it is sort of Gravity plus Beyond Standard Model. First let me to put some square roots under the carpet by redefining \hat m_{top} \equiv \sqrt 2 \; m_{top} \hat G_F \equiv \sqrt 2 \; G_F...

integration of Newton equation?? Newton's second law is insufficient to describe the motion of a particle. In addition, it requires a value for F, obtained by considering the particular physical entities with which the particle is interacting. For example, a typical resistive force may be...

Lots of scientists have been researching inertial effects in an attempt to develop the "reactionless space drive" (sometimes called propellantless or self-contained space drives). Has anyone made any headway? I sometimes find articles pertaining to this that will state things like...

"By sketching appropriate graphs (one of them a straight line) show that the function f(x) = 2sin(x) - 3x + 2 has only one real root." this one confuses me from the word go. how can you sketch a straight line of that function when it has sin as part of it?

a 3kg object sits on table with a pulley attached to it. there is a M object hanging from the pulley. dropped from rest the system moves 127.5cm in 1.65951s. there is no friction. what is the value of the mass M. i used x=vot+1/2at^2 to find the accleration of the 3kg object. it is...

I'm doing a project on Isaac Newton for my physics class, and the main part of it is a power point project. I figure that I might as well have some songs that mention Newton playing in the background, but I've only been able to find 2 so far. So if you know any songs besides "The Sounds of...

The following 2 page example illustrates the use of the Newton-Raphson technique for solving for roots of functions. Examples included: 1. Function in a single variable 2. System of non-linear equations

A block of mass, m1=3.6kg on a frictionless inclined plane of angle 30 degrees is connected by a cord over a massless,frictionless pulley to a second block of mass,m2=2.1kg hanging vertically.. I can't find the formula or anything. any help? as i need to find the magnitudes of acceleration for...

"Respect" Newton question Ok here's the question: A boy drags a 100-N sled up a 20 degree slope at constant velocity. If the coefficient of friction between sled and hill is 0.2, what force must he exert at an angle of 35 degree with respect to the hill? Ok, I've done the FBD and...

have been trying to make me own workig Newton cradle. I know some physics. the problem is that my balls don´ta completely stop moving after the coalition, they rather continua their movement but with a reduced violocity. This typ of movement increases and grows with the number of coalitions. At...

I'm giving a talk in a few days about Newton Polygons for polynomials and I was wondering if anyone knew of a few (short) interesting uses I could discuss or perhaps a text with a chapter on the subject. I have a cool result about irreducibility and of course the basics but it would be nice to...

Hi, I need some help on a paper I'm writing about Newton versus Einstein. Basically I have to prove that Newton is the greatest physics person alive. I researched a lot online and found that Einstein basically copied Newton's findings and added the fourth dimension to make it look it was his...

A 1940 kg Oldsmobile traveling west on Saginaw Street at 17.4 m/s is unable to stop on the ice covered intersection for a red light at Abbott Road. The car collides with a 4166 kg truck hauling animal feed south on Abbott at 9.5 m/s. The two vehicles remain locked together after the impact...

Does anyone know the conversion factor to go from a force in Newtons to a force in tonnes? The only relevant information I could find was this site, which says "1 Newton = 0.00010197162 tonne-force" Is this correct? Thanks

I recently read some of Liebnez's work and have become interested in a very important fact. I became very interested by one of his arguments and wondered if this has been dealt with recently. Its fundamental to emperical methods, let me explain the basic process in a simple way: We are...

I was wondering if any of you could explain how Newton derived his Law of Gravitation: F=G*m_1*m_2/r^2 ? If this question is to vague tell me, thanks guys.