Embedded Files
Documents you may need:
Statics & Dynamics
Dynamics Lab (pdf or google doc) (This is Activity #52 and needs to be completed in your Notebook)
Hanging Sign Lab (pdf or google doc) (This is Activity #54 and needs to be completed in your Notebook)
If you were absent for the lab you can complete an ALTERNATE lab (pdf or google doc)
PhET Torque Balance Game Lab (PowerPoint for instructions...)
Torque Challenge Lab (google doc)
If you were absent for the lab you can complete an ALTERNATE lab (pdf or google doc)
Spinning Lights Observation Lab (pdf or google doc)
If you were absent for the lab refer to these two pictures to help with filling in the data tables and answering the questions (pic #1 and pic #2)
Static Sign Practice Worksheet (pdf or google doc)
Centripetal Motion & Universal Gravitation
Circular Motion Lab (pdf or google doc) (This is Activity #56 and needs to be completed in your Notebook)
Direct Measurement Video Lab (pdf or google doc) (This is Activity #55 and needs to be completed in your Notebook)
PhET: Gravity & Orbits Simulation Lab (pdf or google doc) (This is Activity #59 and needs to be completed in your Notebook)
Centripetal Force Lab Instructions (pdf or google doc) and Data Sheet (pdf or google doc)
If you were absent for the lab you can complete an ALTERNATE lab using this data (pdf)
Isaac Newton & the Newtonian Revolution (google doc) (This is Activity #57 and needs to be completed in your Notebook)
Pluto Files Ch.2 Questions (pdf or google doc) (This is Activity #60 and needs to be completed in your Notebook)
Torque & Center of Mass
Torque Lab using meter sticks (pdf or google doc)
If you were absent for the lab you can complete an ALTERNATE lab (pdf or google doc)
Center of Mass Lab (pdf or google doc)
Torque Worksheet (pdf highly recommended over the google doc)
Extra Practice:
2D Motion Study Guide & Puzzle (pdf)
2D Motion Partner Review Worksheet (pdf or google doc)
Circular Motion (pdf or google doc) but don't check the answers until after you try it!
Hanging Sign Help (pdf)
2D Motion Help (pdf)
Inclined Plane Help (pdf)
Planet Dice Activity (pdf)
2D Forces Practice Free Response Test (pdf) (You'll need to be signed in to your PUSD Google account in order to download it)
Answers to Practice Free Response Test Questions (pdf)
Lecture Notes from this Unit: (You'll need to be signed in to your PUSD Google account in order to download them!!)
Dynamics Notes (This is Activity #51 and needs to be in your Notebook)
Statics (aka Hanging Signs) Notes (This is Activity #53 and needs to be in your Notebook)
Universal Law of Gravitation (This is Activity #58 and needs to be in your Notebook)
Solutions to some HW Problems:
Homework Hints:
November 18th, 2015: Homework Packet
Statics & Dynamics:
1. pg. 135 #45; Pg. 141 #67
2. Short Static Sign Practice worksheet
3. pg. 140-141 #64, 65, 77, Pg. 133 #34, 36
4. pg. 135 #38a, 40
Circular Motion & Universal Gravitation:
5. pg. 156 #16, 17
6. pg. 156 #12, 14, 18, 20; pg. 166 #62, 63
7. pg. 164 #36, 37, 38
8. pg. 178 #7, 9; Pg. 181 #14, pg. 185 #17 & 18
9. pg. 191 # 26, 30, 31, 41, 42
10. Daily Warm Up Questions (DWQs): 11 of them
November 12th, 2015: pg. 156# 12, 14, 16, 18, 20; pg. 166 #62, 63
63. The word problem says that the record player has a rotation rate of 33.3 revolutions per minute (rpm). Convert from revolutions per minute (rpm) to revolutions per second (rps), in order to find the frequency of revolution. Then take the reciprocal of the frequency of revolution in order to find the period of revolution (T). Then use your T value in your equations in order to answer the equations.
November 4th, 2015 Statics Practice worksheet
Remember, the general form of the equation for the magnitude of the tension (when there are two supporting strands) is: FT = -Fg/2sin(theta)
1. If you sum your forces there is only one Force of Tension working against gravity. (~30)
2. If you sum your forces there are two Forces of Tension working against gravity. (40)
3. If you sum your forces there are four Forces of Tension working against gravity.(~30)
4. Find the vertical component of the Force of Tension by summing your forces in the vertical direction. Use trigonometry to find the Force of Tension along the rope. (<40)
5. Since you are given the Force of Tension work it backwards from #4. First find the vertical Force of Tension component using trigonometry and then sum your forces to find the Force of Gravity. Use the Force of Gravity to find the mass (<40).
November 12th, 2014: pg. 135 #38a and 40
38. Do (a) only!You are given the Force of Gravity and you will need the mass so find the it using Fg=mg. Find the Fgx using sine; this is the force that is pulling it down the plane. Since there is no Force of Friction mentioned, this is the only force in the direction of motion and is equal to mass x acceleration. Solve for the acceleration (<5).
40. You are given the mass and must solve for the Force of Gravity (>400). Find Fgx (>300) and Fgy (>300). Find the Normal Force now that you have the Fgy and use that to find the Force of Friction (<80). Sum the two forces in the direction of motion and divide by the mass to find acceleration. (>5)
November 7th, 2014: pg. 140 #61, 62, 64, 65, 77; pg. 134 #34, 36
pg. 140 is conceptual - refer to your notes and the Chapter
34. Given the mass of the glass, find its Force of Gravity. Remember that the Force of Gravity can be broken up into parallel (Fgx) and perpendicular (Fgy) components. Draw a triangle to help you out; the Force of Gravity is always straight down. (>1 for both)
36. As the kid moves down the banister, his normal force is equal but opposite to the Force of Gravity in the y direction only. Use his mass to solve for the Force of Gravity and then use cosine to find Fgy. Use that (and the fact that ay = 0m/s^2) to solve for the Normal Force. (<400)
November 27th, 2012: Torque Worksheet
4. You have multiple torques going around the pivot point which is the bottom bolt. There is a Torque from the top bolt 3m away and another torque due to the Force of Gravity half the length of the sign away.
Mobile - Start from the bottom! READ the instructions at the top of the page. Balance the Torques of the first horzontal strut and determine where you will hang it. Since the masses are equal, you should hang it from the center of that horizontal strut. Then, add the masses as this will become the new perpendicular force for the next horizontal strut. For each strut, you know the force and distance on one side so that you can calculate the Torque. In order to be balanced the Torque on the other side must be the same. Given that force find the distance.You will end up with angled connnections, which doesn't look realistic, which is why you must redraw the mobile at the bottom of the page.
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