Newton Definition and 527 Threads

Hi Guys, new poster here. I am currently doing a practical report on Uniform Circular Motion, where we had to swing a rubber stopper around attached to a length of string and mass. I have to do a write up, including the background theory. I have searched everywhere but I have found no clear...

Lately, I have been trying really hard to understand the Newton Leibnitz Formula for evaluating Definite Integrals. It states that- If f(x) is continuous in [a,b] then \int_a^b f(x) dx = F(b) - F(a). But one thing that just doesn't make sense to me is that why should f(x) be continuous in...

Hi, According to Newton, F= (GM¹M₂)/r² Einstein proved that light bends around massive bodies, due to gravity. (because space bends around these bodies) Mass of light = zero, but its being affected by gravity. So, is Newton's equation not universal?

Homework Statement Given that: theta_dot = 6 rad/sec m_A = 0.8kg u_k = 0.40 The problem also mentions that movement is at a constant angular rate so I think that means: r_doubleDot = 0 theta_doubleDot = 0 Lastly, at an instant: r_dot = 800mm/sec = 0.8m/sec 2. Homework Equations...

Can someone check this is correct? Using the Newton Raphson method with X0=2 to find the root of the equation: x^3-x-1=0 (correct to 4.d.p) My answer is: f'(x)= 3x^2-1 xn+1= 2-x^3-x-1/3x^2-1 xn+1= 2-2^3-2-1/3(2^2)-1 x1= 17/11 x2= 17/11-(17/11^3)-17/11-1/3x(17/11^2)-1 = 1.3596

Here is the picture for you to understand it better. Please help me calculate the velocity required for the ball. I have already tried it with the formula: displacement = initial velocity(time) + (acceleration)(time2)/2 but cannot since I do not know the initial velocity and the time Please...

Hi. I need to put the formula F=ma into the projectile formula displacement =(initial velocity)time+acceleration(time2)/2 I've already tried it but can't. Please help me Thanks.

Got it!

Homework Statement Hello the text is in swedish but ill try my best to translate, What it says is: Determine the resultant force on the moon with regard to thr gravitation force from the sun and the Earth when it's in this position shown in the figure [ picture http://m.imgur.com/AfJOVZo ] J...

I'm curious as to what he did to figure it out *Newton, sorry

Homework Statement A child on his toboggan is pulled by his father with a force F of value F=240N,on a ice track making an angle α=30° With the horizontal.the cord that the father is holding makes an angle β=20° With the track.assuming that the system(child,toboggan) has a mass of M=40Kg and is...

Homework Statement As simple as the question may seem, I require some honest help. I'm particularly new to physics. The question is the following: A net force of magnitude 4.0N acts on a body of mass 3.0kg for 6.0 s. The body is initially at rest. Which of the following is the speed of the...

Homework Statement Ok so 1000(5.556 m/s – 0 m/s)/0.055 = 101018 Newton’s which is a unit of force. We know the force was applied for 1 foot of travel (.3048meters) Homework Equations So the incorrect conversion would be to multiply by .3048 to get 30790 Newton meters per second. I am missing...

I once remind having read tha Newton wrote a sort of dictionary or glossary of physics concepts of the time, but did not find any reference to this later. Since I need to know for a history in physics research I would like to know if this has some foundation?

This is Newton's law of universal gravitation. $$F=G\frac{m_1.m_2}{r^2}$$ Gravitational field $$g$$ is derived from this formula $$g=G\frac{m_1}{r^2}$$ This is named gravitational "field" strength. If Newton knew nothing about "field concept" and formulated his formula in the form of "action...

I didn't study physics in college nor any other science major, but I love physics and read a lot about it. Still I find troubling contradictions in my understanding of Newton's interpretation of gravity. For starters, how can the force of gravity be directly proportional to the two masses? If...

Hello all, I was talking to a friend of mine earlier explaining why a force acts as if all the mass is concentrated at the center of mass. I know of no other proof than taking the time derivatives of the center of mass. Seeing as this was long before definitive proof of the atomic structure of...

By Newton's second law of motion - inetia,we know that if we push a body in space it will keep moving forever (if nothing stops it) (am I wrong?) but when I think about conservation of energy law I am starting to have problems- let's say that I pushed a body in space,the energy converted into...

NOTE: The following questions are not part of any homework assigned. This is part of finding extra concept-related questions to help me study for my physics unit test. Homework Statement I have conceptual questions, not problems. I'll provide sufficient evidence that I've attempted to think...

Consider a pendulum in it's balance point hanging from ceiling. It can swing in all the directions in the space. The pendulum can only swing in a sphere(the string can't bend). Now, is it possible to release the pendulum in a particular height and with a initial condition that in the first...

I read about 10 years ago that the context in which Newton said 'I have only seen so far because I stood on the shoulders of a giant' was actually in a letter to a nemesis of his, maybe it was Boyle or Haley, and that in the very next clause he goes on to insult the person he's writing to...

Hey Guys! I've been doing a few equations in regards to planetary escape velocity and gravitational force. The below links have the escape velocity of listed planet on the left side of the board, the gravitational force between the Sun and given planet on the right side. In the middle of the...

Homework Statement Write down the Newtonian approximation to the geodesic deviation equation for a family of geodesics. ##V^\mu## is the particle 4-velocity and ##Y^\mu## is the deviation vector. Homework Equations D = V^\mu\nabla_\mu \\ V^\mu\approx(1,0,0,0) \\...

Hello, can anyone help me to convert 180 ton to kN/m ? Which formula can you use to convert this? Thanks!

I was confused by a NASA pdf document about flight physics. I provide quote from NASA document instructor's flight manual, flight testing Newton's laws. Document is categorized DFRC-X41-1. Did NASA use some fast-and-loose language right there? Imprecise definition of drag using Newton third...

If I jump, I accelerate away from Earth. However, if I drop a human on the ground, he doesn't accelerate away from the Earth. In both cases the force used on the Earth is about the same, but acceleration away from the Earth exists in one case and doesn't exist in another case. Why so? (not a...

Homework Statement A[/B] crate sits in the back of a truck that is accelerating to the right. The crate does not move relative to the bed of the truck. Draw the free body diagram and sum the forces for the crate only.Homework Equations F⃗ net=ΣF⃗ =ma⃗ fs≤μsN [/B]The Attempt at a Solution...

Hi, If one Newton is defined as the amount of force required to give a 1kg mass an acceleration of 1m/s/s is it then correct to say that "10 Newton is the amount of force required to give a 10kg mass an acceleration of 1m/s/s" and would it be equally as right to say "10 Newton is the amount of...

Unless otherwise stated, all objects are located near the Earth's surface, where g = 9.80 {\rm m/s^2}. A person has a choice while trying to push a crate across a horizontal pad of concrete: push it at a downward angle of 29∘ , or pull it at an upward angle 29∘. If the crate has a mass of...

Am I right when I say during Newton's time there was no idea of fields? Now I have been looking for books and courses which are meant for amateurs. So I came across this video of one of my favourite professors Prof Leonard Susskind...

I have a table with several quantities in it, and one of them is \sqrt{T} (T is tension) I have values for this table, and want to put the units next to the values. Something seems off to me about doing this, I guess because they're not integers. Is it correct to say the units are kg1/2m1/2s-1...

If f dimensions are ml/t^2, where does t^2 come from in the equation of F = G*m1*m2/r^2 where I believe G to be a constant, m1 and m2 to be masses and r to be the distance between two masses - so length. To dimensionally analyse this then, where would the dimension time come from if I were to...

Goood Day, I have a cubic root equation. I use Newton-raphson for finding the roots. I want to do parameter estimation (tuning of the equation parameters to be able to give better prediction) using experiment data. Can anyone help me on how to do this? Thanks for your anticipated help...

https://www.youtube.com/watch?v=8yis7GzlXNM Personally, I think a Carl Sagan vs Neil deGrasse Tyson battle would have been better. Bill Nye is a great guy but Isaac Newton is in an entirely different league. However, Neil deGrasse Tyson's appearance at the end was good. Who do you think won...

The three non-linear equations are given by \begin{equation} c[(6.7 * 10^8) + (1.2 * 10^8)s+(1-q)(2.6*10^8)]-0.00114532=0 \end{equation} \begin{equation} s[2.001 *c + 835(1-q)]-2.001*c =0 \end{equation} \begin{equation} q[2.73 + (5.98*10^{10})c]-(5.98 *10^{10})c =0 \end{equation} Using...

Homework Statement Two blocks of mass m are suspended on the ends of a rigid weightless rod of length L1 + L2; With L1=20 cm and L2= 80 cm. The rod is held horizontally on the fulcrum shown in the diagram and then released. Calculate the accelerations of the two blocks as they start to move...

Please look at picture. Here are my equations: For 10kg: -uk m2 g cosθ -T -m2 g sinθ=m2 a For 20kg: T-m1 g =m1 a Add them: -uk m2 g cosθ -m2 g sinθ -m1 g =(m2+m1) a a= 5 m/s^2 (kinematics equations) Isolating uk gives 3.66! The real answer is 0.16. Where am I going wrong?

Why did Verlinde in his paper suggest that information is a central concept in the emergence of gravity? I mean why information and not something else?

Hi my background is in mechanical engineering. I use a little bit of motion physics but not often. Pls excuse any errors or wrong terminology I may use. Einstein's theory of relativity addresses the force of gravity in space time but does it address or apply to gravity on Earth? What creates...

i want to produce 1000 K/nm of torque using motors and gear , output rpm needed is 30 and 1000 k/ nm of torque 1) motor kva? and rpm ? 2) gear ratio and size ? 3) does it also require flywheel ?

Homework Statement These are problems from a Newton rings experiment where a lens was placed on a flat surface and the interference patterns created Newton rings. I measured the diameter of the first five rings and then plotted a graph of d^2 against N (number of the individual ring). These...

Ok! So I know Newton and Leibniz invented Calculus independently and today a major part of maths requires calculus. So what mathematics was done BEFORE Newton?? (I mean the type of research.) Any history book suggestions would be priceless. Also there are methods of integration taught like...

When Isaac Newton discovered the theory of gravity, which is very simple, yet fundamental in its premise: The product of two masses and some scale factor divided by the square of the distance between them gives the force of said masses in Newtons. Am I right to assume Newton only knew of Algebra...

How did Newton come up with f ∝ Δp/Δt ??

Hello! :) The interpolating polynomial that interpolates at the following data: $f(5)=?,f(8)=14,f(12)=214$ is $4,125x^{2}-32,5x+10$. The corresponding interpolating polynomial in the Newton form is $p_{2}(x)=a_{0}+a_{1}(x-5)+a_{2}(x-5)(x-3)$.Which is the value of $a_{2}$? Is it 4,125 because...

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...

Homework Statement Two forces P and Q are applied at the end of a screw eye in order to remove the post. 1.)variations (plots) of P and Q versus (theta) for a given value. R=800 N 2.) for what value of theta we obtain P=Q? Homework Equations...