What is Newton: Definition and 523 Discussions

The Newton is a series of personal digital assistants (PDAs) developed and marketed by Apple Computer, Inc. An early device in the PDA category (the Newton originated the term), it was the first to feature handwriting recognition. Apple started developing the platform in 1987 and shipped the first devices in August 1993. Production officially ended on February 27, 1998. Newton devices ran on a proprietary operating system, Newton OS; examples include Apple's MessagePad series and the eMate 300, and other companies also released devices running on Newton OS. Most Newton devices were based on the ARM 610 RISC processor and all featured handwriting-based input.
The Newton was considered technologically innovative at its debut, but a combination of factors, some of which included its high price and early problems with its handwriting recognition feature, limited its sales. This led to Apple ultimately discontinuing the platform at the direction of Steve Jobs in 1998, a year after his return to the company.

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  1. U

    Newton's Third Law: True or False?

    Hello, True or False: - According to Newton third law, the algebraic sum of the forces in the system is equal to zero. I think the answer is FALSE because, the third law of Newton says that F1 = - F2 and the " - " is for the direction, so that F1 = F2 in the quantity ==> F1 + F2 \neq 0
  2. H

    Newton law's/ force related

    Homework Statement A crate of books is to be put on a truck with the help of some planks sloping up at 31◦. The mass of the crate is 70 kg, and the coefficient of sliding friction between it and the planks is 0.4. You and your friends push horizontally with a force ~F . The acceleration of...
  3. Z

    Supernova gravitation field and Newton

    If a 10 solar mass star explodes, leaving behind a 5 solar mass black hole, and blowing off an idealized spherical symmetrical (5 solar mass) neutrino shell, would the gravitational field (i.e. curvature of manifold) change? http://en.wikipedia.org/wiki/Supernova p.s. addendum: could Newton...
  4. I

    What is the Force Ranking in an Elevator with Stacked Blocks?

    Hello guys, I am currently busy with this introductory assignment on Newtons Laws. I have tried to solve but i am not sure whether i have the right solution. Please help. Homework Statement Three blocks are stacked on top of each other inside an elevator as shown in the figure. Answer...
  5. U

    Question on Newton second's law

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  6. H

    Calculating Net Force on Boxes of Different Masses in Contact

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  7. J

    Newton laws object on incline in equlibrium

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  8. S

    Need help - problem Newton laws + my try

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  9. S

    How Is the Force on Object B Expressed in Terms of Acceleration a?

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  10. D

    Bernoulli Equation and Newton Law

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  11. S

    Solve Newton's Laws to Find Mc for Static Position of MD

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  12. S

    What is the resulting acceleration of object B placed on object A?

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  13. S

    Solving Newton's Laws Problem: Stopping a Cart w/ Box in Min Time

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  14. S

    Newton Third Problem Ball on a Scale - part 2

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  15. A

    Centrifugal force and Newton 3rd law

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  16. I

    Could we rewrite the Newton law

    Could we rewrite the Newton law as F=G\rho\rho1\frac{}{} d^{}2? I' ve read this in a book. Is it right?
  17. H

    Newton, Astrology, and the End of the World

    I just finished watching a documentary on Newton's involvement in alchemy, and how this influenced his religious views, which can be seen here: http://video.google.com/videoplay?docid=930571660745143381&hl=en At the end of the documentary, it gave Newton's predicted date for the end of...
  18. putongren

    Newton said that all frame of reference are equally valid

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  19. I

    Einstein or Newton, the better man?

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  20. F

    How Does Newton's Law Apply to Multiple Gravitational Forces?

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  21. astrorob

    Newton: Is MOND the Answer to Dark Matter?

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  22. K

    Newton Mechanics vs Special Relativity Problem

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  23. R

    Maxwell vs Newton: Contradictions in Electrodynamics and Mechanics

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  24. B

    Newton, freefall acceleration problem

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  25. N

    How far up the slope will the block get and will it come back down?

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  26. Y

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  27. A

    Isaac Newton Contest Question.

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  28. T

    Calculating the Reading on Newton Meter with 3 Kg Masses

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  29. T

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  30. D

    Can Initial Guesses Improve Newton-Raphson's Root Predictions?

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  31. G

    How to teach Isaac Newton the standard model and cosmology

    You are given a chance to fly back in time with no worry over changing history in bad ways. Knock knock and you enter a college looking for famous Isaac Newton, age 45, in person. He's a real fun in every way - mechanics, theory of gravity, celestial mechanics, calculus, the queen. Also he...
  32. D

    Solving Newton interpolation with c

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  33. L

    Discover the Coefficient of Kinetic Friction for a 325N Box on the Floor

    a box of books weighing 325N moves with a constant velocity across the floor when it is pushed with a force of 425N exerted downward at an angle of 35.2 degree below the horizontal . find the coefficient of kinetic friction between the box and the floor. what i do :please see check it the...
  34. S

    What is the Tension on a Spring Scale for an Object on an Incline?

    Homework Statement I am trying to understand how these Newton's laws work, specifically with an object on an incline. If a 5.00kg object is attached to a Newton spring scale on an incline (incline makes 30 degrees with the ground), what reading is the scale giving? Homework Equations Fx...
  35. N

    Taylor, Einstein and Newton

    I have E(v) = (mc^2)/(sqrt(1-(v^2/c^2)). I have found the second-order Taylor-polynomial for v=0, and I get: T_2_E(v) = mc^2 + ½mv^2. My teacher asks me, why this equation must be true - what is so special about the second order Taylor-polynomial for v = 0 for E(v)?
  36. F

    How Newton derived all equations from 2?

    Does any1 know where I can find a book or maybe a website that clearly explains how Newton derived all of those physics formulae all from the 2 equations F=ma and Fg=GMm/r^2? One that is not skimpy on the math, and actually shows how we go from one equation to the next.
  37. P

    Exploring the Differences Between Newton and Riemann Integrals

    What is the difference between the two? Does the Newton integral arise from the fundalmental theorem of calculus and the Riemann integral is the Newton integral but more rigorously defined?
  38. F

    Calculus created in India 250 years before Newton

    ...that's what this headline says anyway. There's a lot more to calculus than infinite series... Also by the time Newton came along most of calculus had been discovered. Newton was the one who saw the big picture & showed that it was all part of the same theory.
  39. N

    Can high school students know calculus better than Newton?

    Or, to write the question in slightly fuller form: Assuming a sufficient level of interest and competence, and very good teachers, could a high school student today understand the calculus better than Newton or Leibniz ever did in their lifetimes? And if not a high school student, then maybe...
  40. E

    Calculating Acceleration and Tension with Newton's Laws | Frictionless Surface"

    Homework Statement The crates are on a horizontal frictionless surface. The woman (wearing golf shoes so that she can get traction) applies a horizontal force F = 50.0N to the 6.00kg crate. a.) what is the magnitude of the acceleration of the 6.00kg crate? b.) what is the tension T in the...
  41. D

    Isaac Newton was Not a Physicist?

    I have searched and searched. I cannot find any record of Isaac Newton performing experiments in mechanics that would have proven his proposed mathematical relations between force, mass, time, and velocity to be true. As far as I have found, Isaac Newton did perform experiments in optics, but...
  42. B

    Where does a Newton come from?

    Hey, I'm new to this forums so I hope I'v posted this in the right section. I'v just started my new job at a large engineering firm, and the chairman has posed a question to all his employee's which I was hoping you could help me with. His Question is as follow; "Where does a Newton come...
  43. D

    I am attempting a condition where Newton and Einstein agree

    On this site http://www.geocities.com/physics_world/mass_paper.pdf It states that the 3 force can be written as... F = M1 x A1 + M2 x A2 Where 1 is the longitudinal component of acceleration and 2 is the transverse component of acceleration. It appears that if there is no...
  44. S

    Sir Isaac Newton Contest: Find the Minimum Length for a Safe Landing

    From the Sir Isaac Newton contest: A 1.0*10^3 kg plane is tryin to make a forced landing on the deck of a 2.0*10^3 kg barge at rest on the surface of a clam sea. THe only frictional force to consider is between the plane's wheels and the deck, this braking force is constant and is equal to...
  45. S

    Who was more genius, Einstein or Newton?

    Please help to find the answer of this question.
  46. T

    Newton method and f(x)=0mod(p)

    Let be the congruence equation with f(x) a Polynomial of grade k then: f(x)=0mod(p) then if we have as a first approximation f(x_{n+1})=0mod(p) then using a linear interpolation: f(x_{n})+f'(x_{n})(x_{n+1}-x_{n})=0mod(p) or...
  47. P

    Was Newton in Error? Philosophical Prejudice & MOND Theory

    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...
  48. M

    How Does Drag Force Relate to Newton's Laws of Motion?

    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...
  49. 3

    Kepler's Third Law and Newton's Law of Universal Gravitation for Planet P

    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...
  50. R

    Nuts About Newton: Exploring Kinetic Energy with Firing a Rifle

    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...
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