Video: Newton's Dark Secrets
Take notes put in notebook call it S2.
Objectives
After studying the material of this chapter, you should be able to:1. State Newton's three laws of motion and give examples that illustrate each law.
2. Explain what is meant by the term net force.
3. Use the methods of vector algebra to determine the net force acting on an object.
4. Define each of the following terms: mass, inertia, weight and distinguish between mass and weight.
5. Identify the SI units for force, mass, and acceleration.
6. Draw an accurate free body diagram locating each of the forces acting on an object or a system of objects.
7. Use free body diagrams and Newton's laws of motion to solve word problems.
What is a free body diagram?
ReplyDeleteWe'll probably be discussing them in the upcoming class periods, because we've only covered half of the material listed so far.
DeleteNow we know that a free body diagram is a picture that displays all the forces acting upon an object.
DeleteIs this for Phreshman Physics?
ReplyDeleteIt's most likely for Phresman Physics since we are currently learning these topics now, but we haven't finished studying all the materials listed, so it currently serves as an overview of what's to come.
DeleteAnd if it isn't John, then I'm sure we can still post here. We just might be talking with non-Phreshmen.
Delete-Kevin Meglathery
Do you guys think we need this for today?
Delete@Derek
DeleteIt is probably for the entire couple of days we talk about the laws.
Kevin, I thought no question was a dumb question, except the dumb questions, which mine was not.
DeleteI wasn't here on Thursday, and don't know how far we got in the material. I wrote down in my note book what I knew from the things posted on the blog. Just one question, how do you calculate net force with one up ward force versus a horizontal force? Are they two separate things entirely like in Bear necessities, or are they related and can be compared?
ReplyDeleteMike Keough
In class, we discussed that net force was the total force, or the sum of all the forces. So for example, if you have gravity acting down on a sitting object on a table, the force of gravity would be -9.8 m/s^s, and the normal force would be 9.8 because it is an upward force, perpendicular to the table and not accelerating. To calculate, you would just add them together, and in this case, 0 force is applied. Also, there would only be a horizontal force if it is accelerating. There could be a horizontal force on a resting object, but it hasn't been proven yet.
DeleteThe year 2060?
ReplyDeleteThis again?
http://www.history.com/shows/armageddon/videos/2012-what-will-happen#2012-what-will-happen
What are you guys' opinions on the 2060 thing?
Well, the whole Mayan-2012 thing didn't really work, so I don't know what to think. I mean, it's obviously a possibility, but I'm still expecting a long life.
Delete-Kevin Meglathery
There was very little discussion in the video of what will happen in 2060 and why. If, perhaps, there is more information given by Newton, an analysis and study done today on that particular work, I could better believe it.
DeleteI believe Newton said that Gravity would simply stop...and then we die I guess
DeleteI think that his prediction of the world ending on 2060 is like his experiments with alchemy. Alchemy wasn't real, so it wouldn't be too surprising if he was wrong about 2060.
DeleteThat video was deep. I can't believe how much they didn't know about the guy. And I can't even begin to imagine his dedication to his work if he skipped sleep for days at a time. Wow...just, wow.
ReplyDelete-Kevin Meglathery
Agreed. I was mind blown from all of that.
DeleteI'm thinking of throwing my social life away so I can go into the study of neurology and the chemical structures inside of the brain.
Kevin, don't you get the feel that the makers of this video slapped a negative connotation of Newton's theological and alchemy work? I don't think that is necessarily a bad thing for the science world considering how much he has contributed to it..
DeleteThe video was quite interesting. But I still wonder why he thought "2060" was the end of the world or "no more apples will fall after that."
ReplyDeleteIm not quite sure how much i should be able to get done from this... I was not in class on friday... could someone from mod 7 tell me what i missed ?
ReplyDeleteI wasn't here on Thursday and Friday and i think i understand it but can someone explain what we did in class those two days?
ReplyDeleteJess boyd
thursday we discussed forces
DeleteThanks
Delete-jess
Mr. Crance, I have tried to watch this video a couple of times and it says that my browser doesn't support it. Is the same video located somewhere else where I can possible see it?
ReplyDelete*Crane
DeleteFor other people having this problem Mr. Crane told me to youtube newtons dark secrets
Delete~Molly Lawlor
I found the video quite interesting. Is this due tomorrow?
ReplyDelete- Katie H.
It's interesting, on how everything in science is part of Newton's first discoveries.
ReplyDeleteIt was very intriguing that Newton was hardly the man society made him out to be but studying alchemy and theology is not necessarily a bad thing is it? What is wrong with being a religious scientist? Also, he wasn't using alchemy to trick people and take their money. I don't understand why they consider this to be a "dark" secret.
ReplyDeleteI could be wrong, but I think the producers meant to use "dark" as a synonym for "hidden." And in response to the bad rep on alchemy, perhaps the makers wanted to show that it was frowned upon in the past; today, it is another religious practice much like the others (with a side of science).
DeleteI was not in class today (mod 7) because I had to leave early to go to a tennis scrimmage in Ocean City. Can someone please tell me what I missed in class today?
ReplyDeleteWe went over the Free Body Diagram WS and got a packet on Inertia. We also discussed F normal = perpendicular. I would get the notes from someone tomorrow at lunch!
DeleteI would give my notes to you Noah, but I think my class is a little ahead of you guys. It would be best to go to him in the morning or during lunch, that way you'll be able to take notes that you understand best.
DeleteI heard something about Mr. Crane being able to record his lessons from a pen and also transfer writing from it on to the blog. Mr Crane, is this true and if so, where can I obtain the notes and voice recording? Thank You!
ReplyDeleteYou have to ask him if you know you are going to be out to use the pen recorder, it is not used every class.
DeleteWhen there's several students absent for one day of class, that's when he usually has someone take notes with the PenCast. He hasn't done any for Newton that I know of, so you'll have to see him about anything you missed.
DeleteI thought this was a good video and I feel I know more about Newton and his double life as it says in the video. I don't think anyone should look at his science differntly and I also do not understand why we never learned he was a religious man before?
ReplyDeleteThis is most likely because of the fact that when Newton was alive, there was a serious lack in telecommunications and digital storage like we use today, so any and all proof about Newton's life had to have come from written articles and Newton's documents. Who knows where Newton could have been hiding his diary? Underneath the floorboards?
DeleteAlso keep in mind that he was a total recluse and rarely spoke to anyone. He was happy sitting alone at home working on the mysteries of the universe, and everyone was happy to let him do it.
Delete-Kevin Meglathery
I understand, but the world has changed I think it is interesting teachers up until now have kept this "secret" hidden
DeleteWell, teachers themselves aren't responsible for the findings of Newton's secrets, more as historians and scientists.
DeleteSome teachers may not even know about Newton's "dark" secrets. As mentioned in the video, there is the Newton that a majority of people want him to be through lack of prior knowledge of his life, but then there's the real Newton that lived in solitude entertaining himself with formulas and his religious side.
DeleteIt really makes you wonder how Newton was able to come up with all of these magnificent calculations and breakthroughs with just the material and knowledge he had at hand. It is astonishing what Newton did, and this video did a great job of presenting that.
ReplyDeleteAgreed.
DeleteMr. Crane mentioned that he would post questions with FBDs, and I was wondering if I am totally missing them! I don't want to miss a homework and I don't see anything posted.
ReplyDelete-Robyn Kimmel
Can someone please explain how we got meters per second squared from acceleration equals force over mass? I am really confused how it went from mass and force to meters per second squared.
ReplyDelete-Robyn Kimmel
It's pretty simple, and goes back to our study of fundamental and derived units. One newton equals one kilogram meters per second squared, but no one wants to go around saying that. Therefore, the unit meters per second squared is equivalent to newtons per kilogram.
DeleteI think after watching this video it really shows me how Newton lived and haw he created everything he had done. Even though he did have dark secrets doesn mean anyone should look at his work differentl. Newton was a very intelligent man who had many great inventions and studies tha we now use today. I think people do not talk about his secrets becuae they are not aware of what his life was really like until you actually looked and researched him.I was really shocked that no one had known about this before
ReplyDeleteWhat exactly sets the difference between alchemy and chemistry?
ReplyDeleteOther than the philosopher's stone stuff.
The scientific principles (e.g. scientific method) in chemistry set it apart from alchemy.
DeleteI'm pretty sure that chemistry was known to work, whereas alchemy was more of a guessing game.
Delete-Kevin Meglathery
Do you think we will have to know Fg=G(m1-m2)/r^2?
ReplyDeleteMaybe...I think Mr. Crane would explain it to us first just to be sure we knew what it meant.
Delete-Kevin Meglathery
It's definitely something you should keep tucked into the back of your mind for future reference.
DeleteWhat did you find to be Issac's most interesting secret?
ReplyDeleteI was amused at the fact that he used mythology to determine recipes.
DeleteYeah that was cool, I wounder what you can use the "net" alloy for.Its pretty odd for a scientist to insist that God is real.
DeleteThe weird thing about the whole mythological-recipes is that it made sense. They said Mars, Venus, and Vulcan right? And the three ingredients were iron (Mars has a high iron content), fire (I think Vulcan has something to do with fire), and something that made sense with Venus.
DeleteMind=blown.
-Kevin Meglathery
Your last statement was quite right. It is amazaing that Newton was able to even comprehend this information.
DeleteWe should use the "net" to make jewlery, because of its unique purple color.
DeleteDid Newton worship Satin? Did the video ever say what religion he was?
ReplyDeletewatch the video if you haven't, its pretty cool
Deletereligion was very important to Newton
the video spends the time from about 30:00 to 35:00 in the movie on Newton's religion
Newton did not worship a (usually silk) woven fabric....
The devil is spelled with two A's...satin is, as Billy said, a type of fabric.
DeleteIf anyone has done the worksheet with the cart, can someone cofirm with me that 2.a) is 6.7 m/s^2? I wanted to make sure I was doing it right.
ReplyDeleteThat's what I got, so either we're both doing it right or we're both doing something wrong.
DeleteThat one was the empty cart with two weights on the end of the string, right? If it is, then yes, you got it right.
Delete20N of force divided by 3kg of mass= 6.66666...
-Kevin Meglathery
Thanks guys.
DeleteThe alchemy thing makes me wonder about the possiblities of how many different alloys can be made, each one with different qualities!
ReplyDelete