Conceptual: Impulse and the Effect of Bouncing

This is all we got written on the board today, but I'm also posting some old notes below it that are more explicit. We also threw eggs at a sheet and made devices to save an egg when dropped from the ceiling. Homework: Momentum II..

Videos of bouncing are here and here.

Honors: Forces Study Guide

Today is your day to work on the study guide for our second test. We also counted stamps today. Next class you will have about 45 minutes to last minute studying, and the last hour will be your test.

Period 4, I have to proctor AIMS on Wednesday, so make sure you email me any questions Tuesday as you will not see me Wednesday. miss.volkening@gmail.com

Study Guide: Forces
Answers:

Conceptual: Forces Study Guide

Here is your study guide for your second test: Forces Study Guide. Your test is Friday.

Honors: Finding g With Centripetal Force

Today we used centripetal force to verify the acceleration of gravity near Earth's surface. The bellwork is below. Here is the lab.

Honors: Centripetal Force

Today we talked about centripetal force and practiced a problem combining circular motion and friction. Your homework is Circular Motion II.

Centrifugal Force

Today we spoke briefly about centrifugal force. We were really killing time on a pep assembly day, however, so we won't be testing on this. No homework.

Conceptual: Centripetal Force

Today we talked about centripetal force and practiced a problem combining circular motion and friction. Your homework is Circular Motion II.

Conceptual: Centripetal Force Lab

Today we completed the Centripetal force lab - it is homework if you didn't finish in class. Bellwork set it up:

Honors: Friction

Homework is Friction I.

Teacher Out

I've off at a training for MESA so you're on your own today. Conceptual class (p.1), please work on Friction II and also turn in last night's homework. Honors classes, please work on Inclined Planes I.

Honors: Inclined Planes

First a little trigonometry and geometry review.

Then we learned how to handle an inclined plane: turn the axes!

Conceptual: Friction

Today we started talking about friction. You homework is Friction I.

Solving Newton's 2nd Law Problems

The demo mentioned in the bellwork was pulling a tablecloth out from underneath some dishes.

First we walked through a standard problem involving Newton's 2nd Law:

At this point we practiced on the worksheet Net Force and Acceleration (link to the back). I don't have an electronic version of the front. You also received Forces Practice for homework. This contains conceptual problems similar to what you'll see on the next test.

For the Honors classes, at the end of the period we did the same practice problem as before but made the pulling force at an angle. Notice that the basic procedure does not change, but when finding the net force in each direction we have to break up the angled force into its x and y components. We also skipped the stuff in the y direction because we already knew the acceleration in the y direction is zero, so net force in the y direction is zero.

Newton's 3rd Law

Today we looked at some consequences of Newton's 3rd Law, including the normal force. Homework is Newton's 3rd Law.

Weight and Free Body Diagrams

Bellwork first:

Then we practiced finding your weight on various celestial bodies (note that Jupiter doesn't really have a surface as it is a gas giant)

And finally we took some short notes about drawing free body diagrams. We will use these a lot in the future.

Newton's 2nd Law

Today we used your lab results to derive the equation form of Newton's 2nd Law. We also did a few practice problems. Homework is Newton's 2nd Law.

Newton's First Law

Today we used some hypothetical and real-life examples to analyze Newton's First Law.

Homework is below.

Forces Intro

Today we did an overview of forces. There is no homework.

Honors: Law of Universal Gravitation

Today we sort of derived the Law of Universal Gravitation. Later we'll play with the math of orbits with this equation, but for today your homework is conceptual: Universal Gravitation I.

Honors: Centrifugal Force

Today we briefly talked about centrifugal force, which is a pseudoforce (fake force) but is still pretty cool. Centrifugal force appears if you have a rotating reference frame and is indistinguishable from gravity to a person inside that rotating reference frame. We watched a couple of clips from 2001: A Space Odyssey that show how a rotating reference frame could be used to create "artificial gravity."