Graph for Physics class

Hi folks,

Here's a template to help you get started on the graph for the homework this week.  The vertical axis is the force it took to lift the pennies, the effort force.  The horizontal axis is the distance that the fulcrum was from the load.  Let me know if you have any questions.

Recording for Physics week 19: Calories and Levers

http://www.youtube.com/watch?v=v1dp4wUJAMw

1/28 Physics class and homework due 2/4

Hi folks,

Today we talked about about human energy and how humans get and use energy in the form of calories.

We also did a bit of work with simple machines and did a lab using the lever.

Homework this week is to answer the questions in this email and

Read the Levers chapter in the Bite-Size Physics book I sent and do all 5 questions at the end of the chapter.  Please use the answers as reference only!  Answer them yourself first.  :)

Create the graph we talked about in class and using that graph answer the following questions.

1. What happened to the effort force as the fulcrum got closer to the load?

2. What happened to the effort force as the fulcrum got farther from the load?

3. What happened to the load force as the fulcrum got closer to the load?

4. How about when the fulcrum got farther from the load?

5. If you wanted to lift an object that you couldn't lift by yourself, where would you put the fulcrum? Close to, or far from the load?

6. What relationship does distance have to force in regards to the lever?

▶ Physics 2013 week 18 - YouTube

http://www.youtube.com/watch?v=cV05mILlf-Q

1/21 physics update and homework due 1/28

Hi folks,

Last week we did a nice conceptual overview of what energy is and this week we got a bit more into the nitty gritty and mathematics behind energy. We introduced the concept that energy is the ability to do work and that work is equal to force times distance. To make that more concrete, we went outside and pushed my car again. This time, however, we measured the amount of force it took to move the car and measured how much time it took to move it. Using those measurements we calculated the energy it took for us to move the car and we found how many Watts and how much horsepower we used.

In my opinion the text that we're using goes into too little detail on energy. I'm including my Energy eBook to help supplement the text

Homework for due 1/28 is to

Read pp 103 and 104
Read the Energy and Work chapter in the eBook

Do Review Questions on page 119 #'s 1 - 5
Plug and Chug Pg 120 #'s 1 and 3
Think and Solve # 2, 4

Also, do the "Find the Power" experiment in the eBook. We did the first part where you find your wattage in class. (Email me if you can't remember your wattage.) Compare yourself to at least 5 different appliances.

Link to Phet Sim for Physics homework

Hi folks,

Sorry, I forgot to include the link for the sim. Here you go. http://phet.colorado.edu/en/simulation/collision-lab

1/14 Physics update and Homework due 1/21

Hi folks,

We have started our energy block today. We discussed how we perceive energy using our energy "antennae", our ears, eyes and skin. We also discussed how energy is like a phantom. It's invisible until it interacts with matter, it changes forms and it can neither be created nor destroyed.

Homework for this week is to do the enclosed .pdf. This is another exercise with a PHET simulation. There still seems to be some confusion with conservation of momentum so this well help to nail down that concept. Besides….it's kinda fun! :)

Recording of Week 17 class: Introduction to Energy

Way to go, ScienceJim! Your video's now on YouTube.  SANY3239 We've sent this email to sciencejim-6785@pages.plusgoogle.com. You can unsubscribe from notifications for finished uploads by visiting Email Preferences. ©2014 YouTube, LLC 901 Cherry Ave, San Bruno, CA 94066

1/7 Physics update and homework due 1/14

Hi folks,

Today we wrapped up our unit on mechanics with a lab practicum.  The students used all their new and fun formulas to analyze the game Angry Birds.  They figured out the momentum, mass, force, impulse, acceleration, velocity and more of various aspects of the game.  If you would like to get into this in even more depth, a fellow by the name of Rhett Allain has done many many calculations on various parts of the game.  Here is a link to a forum with bunches of articles by him.  

Homework for this week is to finish up the lab work at home.  Some of the questions are quite tough, so please feel free to email me if hints are needed.

There will be no recording this week since most of the class consisted of the lab practicum.

Physics Class resumes this week.

Hi folks,

Just a reminder for all that physics restarts this coming week. Hope everyone had a wonderful set of holidays and is all set for a brand new year!

Also, if you happen to have any device with the game Angry Birds on it, please bring it to class. We are going to do a lab practicum this week where we will be applying concepts we've learned in the mechanics block to analyze different aspects of the game.

Lastly, if anyone that is missing assignments would like to know what assignments they are missing, please let me know. I'll be happy to get you that information so that you can get credit for those assignments.

See you all soon.

Jim Mueller