Low Earth Orbit Simulation

Newton's Cannon

Last Friday November 19

Hey guys, sorry about the delay, I forgot

We worked on several sheets that were given to us including
- a review on Gravitational Potential Energy
-Gravitational Fields Worksheet
-Escape Speed

Sample Question from "Gravitational Potential Energy Questions"

A 500.0 kg communications satellite is initially at rest on Earth's surface before it is launched into space. What is its gravitational Potential Energy at this point?

Use Formula PEG= - Gm1m2/R
G= 6.67 x 10^-11
m1 = 50.0kg
m2= 5.98x10^24kg (mass of Earth)
R= 6.37x 10^6 (Radius of Earth)

- [(6.67x10^-11)(50.0 kg)(5.98x10^24) / 4.22x10^7m]

PEG= -3.13 x 10^10


If there are any questions or you need the sheets from Friday feel free to ask Mrs. Kozoriz

Sorry again for forgetting about it :P

The gravitational potential energy

Hi everyone,

On Thursday we learn some interesting facts about GPE that equation of PEG = -Gm1m2/R is always produces a negative value.As R increases,the masses get further apart,PEg increases by becoming less negative.As R increases to the point of approaching infinity R → infinity,the potential energy approaches zero,PEg → 0

The differences between

FGand EGPE

1. F inversely 1/R square E inversely 1/R

2. is a vector quantity is a scalar quantity

3. S.I unit measured in Newtons S.I unit measured in Joules

Janna's Scribe Post for November 16th 2010 !

Hey guys for today's class we got back our Energy in a Trebuchet worksheet & our questions 3, 4, and 5 that we were to do out of the Green Textbook.
Next we went over our Chapter 8 Study Guide and filled in the blanks in the Universal Gravitation, Newton's Use of His Law of Universal Gravitation & Weighing Earth paragraphs on the first page of the study guide. The answers can be found in the slide post directly below my scribe on the first page of Mrs. K's post. Then we went over the answers of the first three pages in the Chapter 8 Study Guide Motions in the Heavens and on Earth booklet. Again, these answers can be found in Mrs. K's slide post from page 2 on.
After going over the answers we picked up 3 worksheets: Universal Law of Gravitation, Chapter 7 Transparency 7-2 & Chapter 7 Transparency 7-3. If you were away make sure you pick up these worksheets ASAP and do them for we will be going over the answers in class tomorrow. =)

Homework:
- Universal Law of Gravitation
- Chapter 7 Transparency 7-2
- Chapter 7 Transparency 7-3

Happy Homeworking !! :)

Ch.8 Study Guides Answers

Ch.8 study guides answers

View more documents from ekozoriz.

Monday, November 15, 2010

Hello my fellow classmates! It's me Amy scribing again. In today's class, we went over the problems in the green textbook that was assigned to us on Friday. The page number is 172 for those who missed the chance to do those questions. Questions 1-5 were assigned for us as homework and we had gonve over the first two in class today. The other 3 were to be handed in at the end of today's class. I'm assuming those are for marks so hurry up and hand them in before Ms. Kozoriz returns the assignments back to the class! I would give out the answers for question 1 and 2 but sadly they are on the same paper with the 3 other questions that are to be handed in. In other words, I don't have them with me :\. Sorry!!!

So for half of the class, we had worked on those problems. Afterwards, we were given 4 hand-outs from Ms. Kozoriz!!! Those hand-outs included "Concept-Development Practice Page (Chapter 12: Universal Gravitation)," "Chapter 11: Gravitational Intructions," "Issues in Space Exploration: Benefits," and "Chapter 8 Study Guide." Please see Ms. Kozoriz if you missed/don't have any of these hand-outs!!!

We had went over the "Concept-Development Practice Page (Chapter 12: Universal Gravitation)" and "Chapter 11: Gravitational Instructions" worksheet in class.

Here are the answers and what the worksheets look like:

Concept-Development Practice Page (Chapter 12: Univeral Gravitation)

--Check out the cool experiment in question 3!! You'll be amazed, guaranteed :D.

Chapter 11: Gravitational Instructions (Side 1)

Chapter 11: Gravitational Instructions (Side 2)

If you're wondering what "Fold" means, it means the solved equation equals to the "old force." The old force is the force we use to calculate our "Fnew" ("new force") for what we're trying to find. This correlates to having constants (number in front of "Fold") or no constant at all to determine the new force out of Newton's Universal Law of Gravitation equation. For example, if there is "4Fold" means 4 times the "old force." By increasing the "old force" 4 times, a new force ("Fnew") is developed where the it is equivalent to 4 times the "old force." Please see me if you don't understand the concept :).

Along with the other two hand-outs, we were to read the "Issues in Space Exploration: Benefits" package and finish the first 3 pages of the "Chapter 8 Study Guide."

There was not much work to do in class today. So for those who were absent, you guys didn't miss much. That concludes the lession in today's class. If anyone has a question about the hand-outs, you can come see me about any questions and see Ms. Kozoriz for the ones that you didn't pick up. As for a heads up in tomorrow's class, you guys will be receiving an additional 2 new hand-outs called "Transparency 7-2" and "Universal Law of Gravitation." Thanks for reading my post :)!!!

November 12, 2010

Hello everyone!

In physics class that day we had a lab about ellipses, pick the sheet up from Ms.Kozoris, and if any trouble ask a friend or Ms.Kozoris herself. It's not very time consuming so that's a plus!

Reminder that it is due to hand in ASAP!

We also had practice questions to do on pg 172 in the green physics textbook.