Newton Definition and 525 Threads

Homework Statement Having problems on the method of calculating the acceleration due to gravity of the planet. A certain planet has a diameter of 1715 km and a density of 5254 kg/m³. The planet has a moon that orbits every 4.46 earth-days. What is the acceleration due to gravity...

just asking, because it seems abstract and complicated for me.

Hi everyone, I has been learning numerical method recently, i am very wonder how fixed point iteration method and Newton raphson method works (a more insight explanation rather than mathematical proof ) thanks!

Homework Statement Two forces P and Q are applied at the end of a screw eye in order to remove the post. Homework Equations The two equations that were found are 1.) Q*sin(30)-P*sin(θ)=0 2.) Q*cos(30)+P*cos(θ)-800=0 The Attempt at a Solution I combined the 2 equations by first...

Who would you choose as the superior physicist ,Einstein or Newton?(judging from their intellect and accomplishments),Russian physicist Lev Landau had a list ,in which Newton was first .Is there an intellect superior to either of them?

As I see,I will show you something and I want to explain me who has right. For example into the run a human walk with 5km/h while the train runs with 100km/h,in the same direction. So Newton says: U=V1+V2=5+100=105km/h Einstein,about his law for big speeds says...

Hi, My name is Hari and i am new to this forum. I am currently working on a research problem using Newton rhapson method to find solution for a system of non-linear functions. The precise application is Inverse Kinematics of manipulators. However, i have three non linear equations function of...

Hi, Can someone please explain to me why Wx (in the attached diagram) will be W sin theta instead of normally as W cos theta? I don't really understand the explanation that was given - "it is more useful to express the components of W in terms of the angle theta which the inclined surface...

Hello I studied about the Newton law of Gravitation which states that in universe every matter attract each other with a force which is denoted by F= Gm1m2/r^2. But in my view it is only happen within the region of gravity of a matter. but not in the space. please can anybody help me in...

If force includes strength/magnitude and direction, then why do we say a Newton or Pound is a unit of force? Isn't it more a unit of the magnitude of force? Please help. Now that i have been thinking about forces always having direction, this is all confusing me. Thanks

The law of gravitation states force between two point masses m and M is proportional to their product and inversely proportional to the square of distance between them. So I'm just curious to know how did Newton discover this law? What kind of experiments he did to derive this formula? I want...

Hi... Having problen in understanding Newton's ring experiment ? And why are rings circular in shaoe ? Thanks in advance...:)

Newton and Leibniz both had a method of differentiating. Newton had fluxions and Leibniz had something that resembles the modern derivative. Historically, does anyone know how they went about calculating the derivative?

Homework Statement (see attachment) Homework Equations The Attempt at a Solution I assumed that the acceleration of 5M is towards the right and is ##a##. Moving to the frame of 5M, the other two blocks experience a pseudo force. The forces acting on M are the tension in the...

According to GR gravity is not a force so what is gravity according to GR? And according to Newton gravity is a force. Who's right and why?

in the special theory of relativity. nothing can move faster than photon but in netwon, if mass changed it effect right away though how far the two mass how can i understand??

I am (relatively) new to your forum and do not know where to post my question. I am kinda well-read in Physics and Math, but very not educated or trained in either. I am personally interested in the fuzzy area where Math, Physics and (patent) Law cross paths. The Problem: "I need help...

I know that Newton's work made possible the Industrial Revolution, but I don't know how. I understand his impact on subjects like astronomy, gravity, and predicting motion, but not on mechanics and industrial technology. The steam engine was the most important machine in the early Industrial...

The most common definition of mass, at least in the Newtonian context, is in terms of a measure of inertia: The mass of an object is a measure of, and gives rise to, its resistance to changes in motion. F=MA presumably quantifies this idea of inertial mass. I'm wondering whether any...

Homework Statement 2t=nλ, t=thickness , n=the number of rings counted, λ=wavelength. Which diagram is correct? Homework Equations The Attempt at a Solution I think the vertically down and up is correct for the using 2t=nλ, but the curved surface should make the incident angle...

So I am studying the laws of Newton and I am wondering,are there any deficiencies related to the laws?I mean,somewhere where I can't use them or anything?

Differences between Newton Raphson & Gauss Seidel Methods !? hello everyone ... can anyone please summarize me the differences between Newton Raphson & Gauss Seidel Methods in load flow study !? I'll be really thankful

There are many threads about this on this forum: People are confused about the basic idea of Gravitation in General Relativity. They understandably don't understand how the very common balls-on-rubber-sheet-analogy explains anything. I usually post those two links to help them...

Sorry guys, but this was the logical follow up of my previous thread. Your mission, if you choose to take it, is the following: who better "revolutionized" physics, Einstein or Newton? For now we will leave the question this simply, I may push for more clarifications later. Give your reasons.

I wanted to start a thread to hear everyone's opinions over who they thought actually invented the calculus. I read "the calculus wars" a while back and have always been interested in the phenomenon of "simultaneous discovery." And the calculus debate is really a fascinating one. In short, I...

This one is a DOOZY! A professor at Florida Atlantic University claims that no one was killed at Sandy Hook Elementary school, "that trained “crisis actors” may have been employed by the Obama administration to shape public opinion on gun control."...

A Newton is: ( (one kilogram times one meter) per second) per second) I am trying to get at the basic logic of how we can apply numbers to reality. I have a good understanding of how we use a ratio to express things. A ratio separates one quantity into the amount of another quantity. In fact...

Could someone explain to me what specifically distinguishes Einsteins more advanced treatment of gravity over Newtons? Here’s what I (think I) know. Newton described gravity as a “force” of attraction between two bodies or masses. That force was given by the G constant times the two masses...

Here's what I need to do: "Compare the effectiveness of the bisection method and Newton’s method for the equation x^3−2x−2 = 0 which has a single root between x=−4 and x = 2."So far I've done ok. this is working but of course I need to do iteration which I don't know how. Can someone teach me...

Homework Statement Three small identical steel balls A,B and C are suspended by vertical threads of equal length from a horizontal support, with centres in a horizontal line and separated by a small gap. A is raised by a height 'h', with the thread taut, and released. All subsequent collisions...

So I read that at age 23 Newton went about inventing calculus, I've read different stories on who invented calculus but I'm not going into that here. So my question is Calculus is considered for the most part the most difficult form of math right? So how can a 23 year old invent it? I mean it's...

I'm not sure where to put this thread, so I just placed it in here. One thing I know is that a Newton is the net force required to accelerate an object with a mass of 1kg at a rate of 1m/s2. Now here's one of my questions: if 1N = what I stated earlier, does 2N = the net force required to...

Hi, I've run into a problem with expanding algebraic functions via Newton polygons. Consider the function: f(z,w)=a_0(z)+a_1(z)w+a_2(z^2)w^2+\cdots+a_{10}(z)w^{10}=0 and say the degree of each a_i(z) is ten. Now suppose I wish to expand the function around some ramification point of the...

Homework Statement A tank in the form of a right-circular cone standing on end with its vertex down, is leaking water through a hole its circular bottom. a. Suppose the tank is 20 feet high moreover has a radius 8 feet wide moreover the circular hole has a radius 2 inches. In problem 1.3 you...

1. Nellie Newton hangs at rest from the ends of the rope as shown. How does the reading on the scale compare with her weight? 2. ANSWER FROM BOOK. The scale will read half her weight. In this way, the net force (upward pull of left rope + upward pull of right rope rope weight = 0 3. Can...

Homework Statement An object 50kg is hanged with a wire that wights 12,2kg Homework Equations what's the tension in the robe The Attempt at a Solution W - T = 0 (50+12,2)* 9,81 = 0 T = 610.182 N

a mass of m=6 kg is free to move without friction on a body with a mass of M=18 kg at an angle of theta=32 deg. M is placed on a friction free table. At the moment t=0 m is released from rest from the top of M at an height of H=4m . At what moment does m reach to the table? I'm uploading...

Homework Statement http://postimage.org/image/810vdcuvf/ Homework Equations F=ma The Attempt at a Solution for part a) i put mdv/dt = -F(brake) - kv but is lost for what to put in for part b), help?

Homework Statement Question is here http://postimage.org/image/som50onyv/ Homework Equations F=MA The Attempt at a Solution for a) Power = force * speed for b) Force = Mass * Acceleration F = m * dv/dt for c) for maximum velocity, there must be zero drag i am...

A car of mass 1000 kg tows a caravan of mass 600kg up a road which rises 1m vertically for every 20m its length. There are constant frictional forces of 200N and 100N to the motion of the car and caravan respectively. the combination has an acceleration of 1.2ms-2 with the engine exerting a...

rate of change of momentum. Newton 2nd law (solved) hailstones with an average mass of 4grams fall vertically and strike a flat roof at 12ms-1 . In a period of 5 minutes, 6 000 hailstones fall on each square meter of roof and rebound vertically at 3ms-1 . Calculate the force on the roof if it...

Homework Statement A rod AB is shown in figure. End A of the rod is fixed on the ground. Block is moving with velocity √3 m/s towards right. The velocity of end B when rod makes an angle of 60o with the ground. Homework Equations The Attempt at a Solution I assumed that at any...

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-Or other extreme geniuses who never had time for women. Imagine if people like that just took a few minutes out of their lives to populate the earth.

Newton third law! Hi fellow members! I would like to ask a silly question because my basic concepts are quit weak. Since according to Newton third law, with every action, an opposite and Equal force react to resist motion.Since both ACTion and Reaction forces are equal, they will cancel each...

Hi, I hope you can help me. I am a physicist but not a researcher and have currently not the time to study many papers about the subject of dark matter. What I would need for deeper thoughts is an expansion in a series of the Newton law for cases where it has been measured that star rotation...

Homework Statement Water with mass density ρ are being shoot from a jet with cross sectional area A and velocity v0 at a man with mass m0. 1. Find the force acting on a man at rest (assume all the water are absorbed in the clothes) 2. Find the force acting on a man escaping at velocity v<v0...

Newton Law Gravitation - Multiple choice question?? Homework Statement Newton’s law of gravitation can be applied to the Earth-Moon system. Which of the following statements is not correct? A The value of G at the surface of the Moon is the same as that at the surface of the Earth...

Since Newton's rings are clearly a wave phenomenon, and Newton was a strong proponent of the particle theory of light, how did he explain this effect for which he is named? Thanks!

why Newton had taken force as change in momentum per time? i mean i need to get physical interpretation?what is this force actually? also help me to get an idea about energy in sense(core concept)? not with some equations? i see these equations every time?but didn't know meanining? somebody...