Newton Definition and 527 Threads

What was the conflict between Newton and Einstein? what they division Classical and Modern Physics after after theory of relativity?

Expressing the Schwarzschild in the Weyl form allows one to use the Newton potential. The Newton potential here is, perhaps surprisingly, equivalent with a rod of length 2M and mass M. Also the rod is exactly positioned where r = 2M. Furthermore if we decrease the length of the rod to the...

I am unaware of any other method for analyzing elastic collisions other than applying both conservation of momentum and conservation of energy. Since Newton didn't have conservation of kinetic energy to use as a tool was he unable to analyze elastic collisions? PS In the Scholium at the end...

Homework Statement A person weighs a fish of mass m on a spring scale atached to the ceiling of an elevator. (a) Show that if the elevator accelerates either up or down, the spring scale gives a reading different from the weight of the fish. Homework Equations \SigmaFy=T-Fg=may...

Homework Statement Well it's problem to translate it but I will try... We measured Newtons colobars, the radius of third dark colobar in reflective light is r3 (without any data). When we filled the space between lens and board, that radius (r3) had 4th dark colobar... determine the...

Homework Statement Derive from Newton II the thrust (the force produced by the rocket exhaust) achieved by a rocket motor which ejects material with constant velocity u and mass ejection rate a. Homework Equations The Attempt at a Solution Not sure...I know how to derive vf =...

A 4kg block rests on a table. 5N is applied to it, pulling it the right, giving it an acceleration of 1ms^-2. ( a)If the applied force acts on the block for 5s, what will be the speed of the block at the end of this 5s be? (b)After 5s, the applied force is removed. What will be the new...

I'm trying to understand Newton's rings. So we have a plano-convex lens supported in a plane (please, see image here http://scienceworld.wolfram.com/physics/NewtonsRings.html). The incident light is divided into the light that is reflected at the convex surface and the light that is reflected at...

Homework Statement Bessel's funtion J0(x) is assumed to have a root near x=5. Use the Newton raphson method to find this root to 3 decimal places by taking the first 4 terms of the series. I have found this link which helps me solve the question: http://www.vibrationdata.com/Newrap.pdf...

Homework Statement Find the minor value of the natural number n such that \left (\frac{\sqrt{3}}{2} + \frac{1}{2}i \right )^{n} be a real positive number. EDIT: n must not be 0. Homework Equations Considering the binomial theorem as: {\left(x+y\right)}^n=\sum_{k=0}^n{n \choose...

Homework Statement To find the stiffness of a material, a block of that material is placed 30 cm under a metallic cone with 0.3 kg; the cone is free falling from rest, penetrating a distance x in the block until it stops. It is known that when the cone penetrates in the block the force of the...

why are Newton rings observed in a circuler pattern?

hello forum, i am struggling with the conceptual understanding of this problem: Given two blocks, one on top of the other. There is friction between the two blocks. The upper block is pulled with a force F. Thanks to friction, as long as F is smaller or equal to the static friction...

So, multiply connected spacetime may exist or even does already according to current knowledge, right? And in which of the thousand of millions of books about GR, which every physicist seems to have to have written about at least once, ever you read about it, authors claim that, although it's in...

Well, say there is an positive particle, and a negative particle. Newton said one is pulling the other, and thus it is pulling back. But we now know both particle actually creating fields, and the fields actually exerting the force on the other particle. so basically, this is not action...

Homework Statement we all know to measure g.p,e(gravitational potential enery) we would likely to use g.p.e = mgh, however from the theory of Newton gravitational potential energy theory, g.p.e = G\frac{m1m2}{r}, my lecturer told me that mgh is not equal to G\frac{m1m2}{r} Homework...

from the second law of Newton we know... applied force is proportional to the change of momentum...that means F= k( mv-mu) where k is constant ...from here now proof F=ma

Homework Statement A container of hot water at 80°C cools to 79°C in 15 seconds when it is placed in a room that is at 20°C. Use Newton's law of cooling to estimate the time it will take for the container to cool from 70°C to 69°C. And still later, from 30°C to 29°C. Homework Equations...

Couple questions regarding Newton: 1) Sort of a historical question...In Newton's time, how did Newton explain the stopping of an object due to friction? I imagine that would have been the first objection to his first law. Could he have said that the Earth's momentum had changed due to the...

I am a very mathematical person. I excel in my mathematics courses. In physics, on the other hand, I have always felt less than an expert. I am by no definition a bad physics student. Being mathematically minded I see relationships easily. So physics is not difficult for me to do. What has...

Homework Statement I read that the Newton method for finding roots of an equation doesn't always work. How do I know whether it works or not for a given equation? Homework Equations The Attempt at a Solution For an example, consider: f(x) = 1/(x2-1)+1/(x2-4) - x-1 When I...

Well?

I am curious about the how Newton discovered his laws of motion and his law of universal gravitation. It seems in modern education, the laws are introduced to students somewhat 'magically', and then the students then do various practical experiments and calculations to verify them. If we step...

Homework Statement A baseball player hits the ball straight up in the air with a velocity of 18.0m/s. As soon as the ball is hit, the runner on third base dashes toward the home plate. The distance between third base and home plate is 27.4m. Where will the runner be with reference to home...

the proof of second law of Newton for rotation goes like this: take a sphere rotating around some far axis FT=maT FT=m * ALPHA * R multiple by R tau = mR2 * ALPHA and we can say it true for every limit mass in a body. so sigma tau = sigma (mR2) * ALPHA sigma tau = I * ALPHA...

I seem to remember hearing that there is some question about the orbits of the voyager spacecraft and weather they obey Newtonian mechanics exactly. Can someone please fill me in on the details? Thanks.

Homework Statement Find the acceleration of the masses based on the figure below. m1 = 1kg m2 = 2kg m3 = 3kg Homework Equations - The Attempt at a Solution I am completely lost, I've tried thinking and thinking over and over again about this problem, wouldn't the...

Homework Statement At an airport, you pull a 18-kg suitcase across the floor with a strap that is at 45 degrees above the horizontal. Find the normal force and the tension on the strap, given that the suitcase moves with a constant speed and the coefficient of kinetic friction is 0.38...

unit of force is Newton but... For is measured in Newton but in National Geographic Special documentaries, we have usually heard them using unit "pound" like to determine force like 1) 500 pound bite force of dog 2) 1800 pounds bite force of hippo Why they measure force in pounds not in...

Question reads: Snoopy is flying his vintage war plane in a "loop the loop" patch chasing the red baron. his instrumenets tell him the plane is level ( at the bottom of the loop) and traveling with a speed of 180km/h. he is sitting on a set of bathroom scales. and notes that they read four times...

Looking at the gravitational equation F=G*(M*m)/r^2 and centripetal force F = ((V^2)/r)*m If you set the two equal and solve for G you get: G = ((V^2)*r)/M Substituting (4*pi^2*r^2)/T^2 for V^2 you now have G = (4*pi^2*r^3)/(M*T^2) With solution for G, look at Kepler's...

Homework Statement http://img69.imageshack.us/img69/2429/phyq1.jpg Homework Equations to find the acceleration of the 2 objects and the Tension Force. The Attempt at a Solution since only 1 pulley used, a=a1=a2, then m1a=T (1) m2a=-T+m2gsin45 (2) i...

¿what is the domain of validity of inverse square laws of Newton and coulomb? I think (correct me if this is false) that at the small scale these laws have been verified accurately , but ¿what happens with large distances? :rolleyes: . ¿Have been done an experiment which measured the...

Homework Statement If I have a non linear integral equation of the form: y(s)+\int^x_0{K(x,s,y(s)}ds=f(x) and i want to find a way to solve this numerically using the Newton method Homework Equations The Attempt at a Solution after discretizing, and using the quadrature...

Hey This problem has been stumping me for awhile and I just don't seem able to get it Homework Statement A space shuttle lands ona distant planet where the gravitiational acceleration is 2.0 (We don't know the local units of length and timem but they are consistent throughout this...

Newton Third Law problem. Help pleaseee! Homework Statement The 1.0 kg block is tied to the wall with a rope. It sits on top of the 2.0 kg block. The lower block is pulled to the right with a tension force of 20 N. The coefficient of kinetic friction at both the lower and upper surfaces of...

Homework Statement An arrow, starting from rest, leaves the bow with a speed of 29.5 m/s. If the average force exerted on the arrow by the bow were doubled, all else remaining the same, with what speed would the arrow leave the bow? Homework Equations use a= v-vo/t and f=ma The...

G = 0,0135*10ˇ10 kg/mm*sˇ2 G = 8,0*Newton*mˇ-2 <- How to transduct this to the one above? (to kg/mm*sˇ2)

For some reason I have been extremely curious of how Newton derived his mathematical law for gravitation. You know F= \frac{GMm}{r^2} So the first thing I did before i posted this was search Google and I foundhttp://www.relativitycalculator.com/Newton_Universal_Gravity_Law.shtml" . It...

I saw on t.v. that the moon's distance to Earth as measured by lasers reflecting off of the mirrors left on the moon by Apollo 13 was a bit off from Newton's Fg = Gm1m2 / r^2 formula. I don't recall if the moon was closer or further away from Earth than what was predicted by Newton's formula.

hello forum members, I,m new to this forum and was hoping some one can help me? I work with industrial fans, we use a steel built frame with the shaft & bearings located in an housing called "plumber blocks" that are on top of the steel frame. The blocks are bolted down using 16mm bolts that...

A block B of 20 kg is trapped by a wire of 2 m a car A of 30 kg. Determine (a) the acceleration of the car (b) the tension of the wire, immediately after the system was abandoned the rest, in the position shown in the figure. Despise is the friction. Answer: (a) 6,17 m/s^2 (b) 144 N My...

I am a chemistry student and don't know much about physics. I am trying to understand the definition of the coulomb. Correct me if I am wrong please... A Newton is the amount of work it takes to push one kilogram 1 meter per second... Two Newtons would accelerate the object from 0 m/s to 2...

If both Isaac Newton and Albert Einstein are still alive today, imagine the world we will be living in and the impact on all theories of physics! Can you imagine what the world will be like with them still around?

Do you know if someone already found a link between Newton : F = G mm'/r^2 and Coulomb : F = K qq'/r^2 laws ?

Homework Statement An 93.0 spacewalking astronaut pushes off a 620 satellite, exerting a 120 force for the 0.470 it takes him to straighten his arms Homework Equations FA on S=FS on A Xf=Xi+Vi\Deltat+1/2a(\Deltat)2 Those are the equations I think I use. And initial velocity...

Hi all, I'm new to this forum. I just joined the forum and I hope that you guys could help me out. I'm in the trading business of cookware. I'm currently studying the European standards for these items and there's a point in the standard that I don't understand at all. It says: The...

I am trying to construct a Newton Scooter (one powered by Newton's Third Law) using a spring. Basically, I am supposed to make the scooter travel 1.5 meters. I've tried using a spring from a retractable pen, but the vehicle I constructed seems to be going nowhere. It seems as though too much...

Hi All. Can somebody give me a sample MATLAB code for Newton-Raphson Method for Nonlinear 4x4 System of Equations. I'm trying to set a very ugly one up and haven't seen NR before the beginning of this week. I've figured the NR for a single eqn but this is driving me nuts.

Hi All. I have an equation that i want to numerically find the root of by using Newton Raphson. However the equation involves an integral which i am using the trapazoidal rule to evaluate. And here is the simplified version of it: 1 = e^{-cy} \int_0^1 e^{-y(1-x)} dx So i am supposed...