Newton

Question: newton????? What is one newton(N), in terms of fundamental units of measurement, which are m, kg, and s?

Answer: m *kg / s or m * kg/ s^2

Question: What happens when Newton Force is applied to two objects with different mass in space? This is the whole question: If an astronaut is in space and he has two books, one book with a mass of 100 grams and the other with a mass of 200 grams and he applies 5 Newton force on each of the two books, what happens? What happens when he applies 10 Newton Force to the books? It would help a lot if someone answered this question! Also, this isn't a homework question but a question I've already answered but didn't know the answer to.

Answer: Both books accelerate in the same direction as the force. The 100 gram book accelerates at twice the rate of the 200 gram book. Why? F= m/a a= F/m book 1 a = 5/0.1 a = 50 ms^-2 book 2 a = 5/0.2 a = 25 ms^-2 Think: Its harder to push a heavy object. An object twice the weight of another will be twice as hard to push and will accelerate (move) at half the rate of the lighter object. ------------------------------------------------- Both books will double their acceleration. Why? book 1 a = 10/0.1 a = 100 ms^-2 <- (it was 50 before) book 2 a = 10/0.2 a = 50 ms^-2 <- (it was 25 before) Think: Pushing something harder makes it accelerate more quickly. If you push an object twice as hard it will accelerate twice as quickly. OR When the force is doubled the magnitude (size) of their acceleration will be doubled.

Question: Why are Isaac Newton's writings from the Principa Mathematica indivate why he is important to science? To what extent do Newton's writings from the Principa Mathematica indicate why Sir Isaac Newton was considerd such an important figure in the history of Science, particularly in reard to the figures that precded him and the dilemmas that confronted them?

Answer: He was the first modern scientist to present mathematical backing for his observations. Ptolemy and Bacon had done this earlier, but Newton supplied us with Calculus and helped give support and credence to the formerly unprovable notions of Galileo and Kepler.

Question: Do you wear newton running shoes all the time? I am planning on getting the sir issac s newton running shoes, but my coach is telling me that I don't wear these things as normal shoes. Is he right? Or does he think that the breaking in period of where I would get used to the shoes is why I wouldn't wear them all the time?

Answer: Hi there, I'm sorry, I;m not aware of Sir Issac Newton running shoes... Pleas possibly provide a picture or a link, I really want to check out the stuff. It sounds so awesome actually.. anyways, why don't you check out this one, uumm, you can go for Converse, Skechers and DC Shoes UK also. http://www.treds.co.uk/product/mens-spartan-hi-wc/37789 Plus, check out the latest fashion statements. I hope you'll make a good choice. Don't forget to let me know about Sir's shoes... :) Thanks.

Question: How do you use Newton's second law of motion in everyday life? I can't seem to figure out what in everyday life is Newton's second law of motion. Any suggestions?

Answer: running, driving car.

Question: What series of newton shoes should i start out with as a beginner.? Hey i am wanting t get some of the Newton running shoes cause I feel that I would run well on these types of shoes for Cross Country, but needing some input for the brand of Newton shoes to start out on. So if you can help me that would be great, thanks!

Answer: Racing: Distance Training:Sir Issac I highly recommend buying Nike spikes or a pair of light weight $100 flats for your XC races. You better try them on before you buy or buy through a company with a good return policy (RoadrunnerSports.com) becuase when I tried them on I also tried on the ASICS Gel Speedstar and that shoe fit me just as well and it was only about $80, as opposed to the starting price of $160. Your body/ money: your choice.

Question: How would Isaac Newton have analyzed a modern mlb baseball? A baseball is quite a Physics specimen, with its durability and smack-ability. When you dissect a baseball and place all the materials on a table, you'd never guess it could take the beatings it does in Major League Games and Practices, but they do for long periods of time. Newton never saw or analyzed a baseball, so I am wondering what some of you Physics afficiandos might guess how Newton would describe the physics and durabilities of the baseball?

Answer: He would probably describe the physics as he would any object. The "materials science" aspect of the ball would no doubt fascinate him. He would want to know how it was possible to build such a thing which would open up the whole issue of manufacturing capabilities. He would be delighted, but I doubt too surprised (if he knew how many years we had been given to do all that). -F

Question: How did Newton develop his Law and Theory of Gravitation? Who's ideas before him did he use as stepping stones? I know that a lot of famous scientists use others' ideas before them as stepping stones, successive approximations, whatever, to come up with their new ideas or discoveries. I was wondering what ideas Newton used to come up with his Law and Theory of Gravitation?

Answer: In formulating the theory, Newton relied heavily on Kepler who figured out the orbital paths and periods of the planets (and in turn relied on the excellent observations of Tycho Brahe). The notion that planets orbit the sun at all was first put forward (first in the era anyway) by Copernicus and advocated by Galileo. Galileo figured out (or adopted from somebody and advocated) the notion that objects fall at the same rate in vacuum--a special case of Newton's more general law of gravitation. Galileo also pretty much had Newton's 1st Law--the law of inertia.

Question: How did Newton’s work link physics and astronomy? I know he explained gravity but I don't understand how Newton’s work linked physics and astronomy? Thanks in advance

Answer: Here's the answer in Newton's own words (from the introduction of Book 3 of his "Principia"). Slightly re-written from a published translation of Newton's original Latin: Rules of Reasoning in Science: Rule 1: We are to admit no more causes of natural things, than those that are both relevant and sufficient to explain them. Rule 2: Therefore, to the same natural effects, we must so far as possible assign the same causes. Rule 3: The properties of objects which are found to belong to all the objects within the reach of our experiments, are to be assumed to be universal properties of all objects in the universe. Those ideas may seem "obvious" today, but they were completely different from ancient Greek and medieval science, which for example assumed that the moon, planets, and stars were made something completely different to any material on earth, with different properties, and moved under the direct control of God and Angels, not according to the same "laws of nature" that applied to objects on earth. Newton was the first person who explicitly said that the whole universe followed the same laws of motion and gravitation as objects on earth, and he used the most up-to-date data that was available from the newly invented use of telescopes in astronomy to demonstrate that assumption was correct - for example by showing that the orbits of the moons of Jupiter could be explained by the same law of gravitation that applied on earth and to earth's moon. Of course Newton got some of the details completely wrong. For instance he gave as an example of Rule 2: that "light of the sun has the same cause as the light of fires on earth". But making that wrong assumption is much better science than saying the sun shines because God makes it shine (the Bible ) or the sun shines because it is made of a material that is intrinsically shiny, and which doesn't exist on earth (Aristotle).

Question: How did Newton's corpuscular theory explain reflection and refraction? if somebody knows about newton's corpuscular theory PLEASE answer my question. the user with the correct information and sources will get my 5 star rating and the best answer. please i need the info PRONTO!

Answer: You may try this web page: http://www.newtonproject.sussex.ac.uk/texts/viewtext.php?id=NATP00003&mode=normalized To my knowledge, and the information on that page, Newton never gave a good explanation, but refers to the "refractibility" of different rays (of different colors). It is easy to come up with a model based on a corpuscular theory. If you assume that the material consitutes a "potential well" (i.e. the particle will have higher potential energy there), which is easily interpreted in terms of forces at the surface. For the case of a well, the particle will feel an atractive impulse at the surface, which bends it towards the normal - just as light does. For a potential "bump" as opposed to a well, the particle feels a repulsive impulse, bending its trajectory away from the normal. The problem with this theory, however, is that in the case of a well the speed of the particle is predicted to increase in this theory, while in the wave theory of light it slows down. While Newon could not have been able to measure that directly, nowadays we can. Probably a more central question is if the corpuscular theory can account for the phenomena of interference and diffraction. I am sure, not.

Question: How are Issac Newton's Laws observed in the operating room? I'm writing a paper for school over how Newton's laws are observed in the operating room. I've googled and still have nothing any help would be greatly appreciated. Observed or used in the operating room.

Answer: What do you mean by 'observed'? Most of your physical experiments are governed by classical mechanics i.e. by Newton's laws. Bang on the table. Did you feel anything? This is how 3rd law works. Take some heavy stuff and try to wave it. Is it hard? This is how 2nd law works. Then take a ball, place it on smooth surface and push it. It rolls. This is how 1st law works.

Question: How was Isaac Newton different as a mathmatician than previous mathmaticians? How was Isaac Newton different as a mathmatician than previous mathmaticians? (ie, philosophy)?

Answer: Isaac Newton wrote more on religion than on natural science, and his scientific and mathematical writings were prolific. As a mathematician, he was not so different, other than the fact that he made giant leaps in math during his time. It was Newton’s conception of the universe, based upon natural and rationally understandable laws, that became the seed for Enlightenment ideology and led to philosophies of individual rights and freedoms that sets him apart from others in history.

Question: How would life be different without Sir Isaac Newton? He had discovered the laws of gravity. Later in his life he invented calculus; this had enabled Newton to study planets. Newton also made major discoveries in optics and light, before Newton came along with this theory’s people thought white light was pure light. He discovered the separation of colors in a light beam and The Law of Reflection. So I was wondering what the world would be like with out him.

Answer: Probably not much different but it probably would have taken about ten or 12 other scientist to bring us up to where Newton brought us. Liebnez would have been given full credit for "the calculus". Who know how long it would have taken mankind to gain the insight of Newton?

Question: How do you build a newton car that will go over 8 meters? I have a science project that requires for us to build a newton car that has no wheels, build with wood (12x25cm), nails or screws and a weight that is 2kg or less.

Answer: it's got to have something to roll on... if you can't use wheels can you set it on some type of rods or dowels? The only way it's gonna go without wheels is if you do it on some kind of super low friction surface like ice or something. And even on wheels, I dont think it'l go 8 meters...

Question: How can I find the first estimation to use when approximating with Newton's Method? I understand the basic premise of this concept. Correct me if I'm wrong but I think that Newton's Method is used to find a root of an equation. You do this by starting at one value and building up to find the correct root. I don't understand how to find the starting value and when to stop plugging values into the equation. All of the examples I have seen just choose a number out of nowhere.

Answer: For the initial guess, you really can pull a number out of nowhere. If there are multiple roots to the equation it may point you at different ones given different initial guesses. As you when to stop plugging in values, that's up to you. Usually when the solution changes by less than some small value, you call it good enough. In the example below, they say good enough is when delta-x is less than 0.1.

Question: Newton's Cradle can help explain principles of momentum conservation because it can show how energy is transfe? Newton's Cradle can help explain principles of momentum conservation because it can show how energy is transfered from moving balls to those that are stationary and intern they become stationary and the others move. I first started with one ball to see how the energy transferred through the other balls to get a single ball on the other side to move. I then did two balls to see two on the other side move. Then I did three to see how the center ball continued with the motion.

Answer: Yes, Newtons Cradle is fascinating - etc. - etc. - but I don't actually see a question being asked here!