Pool Table Writeup

For each of your three videos, determine the momentum before and momentum after.

For one of the cases, you will need to do an additional analysis between the pool cue ball and the cue stick. Figure the Force applied for the stick, and identify all variable assumptions you used (t, v(i), v(f), and m(kg)


THESE ARE DUE ON TUESDAY 1/3/12

Documentation of the Pool Table

1. Take a picture or picture(s) of the pool table you have created.
2. Take a picture that will allow you to show how the gravity feed system works. If necessary, you may have to edit it to highlight the gravity system.
3. Create a one ball collision with a bumper using a video feed.
4. Create a two ball video between the ball and a second ball that illustrates 1-d momentum.
5. Create a two ball video between the ball and a second ball that illustrates 2-d momentum.
6. Analyze #3-5 using logger pro and the movie feature. Make certain you scale your picture.
7. Print your data.

Analysis will happen tomorrow and Wednesday.

You must email pictures and videos to marciarpowellATgmailDOTcom with your group member names.

Impulse and Momentum Pool Tables

This activity is adapted from High Tech High

You will be building a table top pool table.
Requirements

The Detailed Sketch must:
-- Be scaled-down from a full size pool table
-- Be no bigger than 65 cm * 130 cm
-- Be drawn on the computer (I would suggest Google Sketch)
-- Represent the ball return system (not simply pockets)

The Pool Table must:
-- Include handmade billiard balls (golf balls allowed), cue sticks, & racking triangle
-- Be functional

The Ball Return System must:
-- Gather ALL the billiard balls in one area
-- Be easily accessible by the players
-- Be seamlessly integrated with the pool table

Step one: Make a materials list (cardboard is marginally useful, plywood is better), assign roles, and create a sketch of your design (please submit the sketch to me via email)
Step two: Create your pool table by Monday, 12/16 and bring to class
Step three: Notes and Ideas



Momentum ideas

Motion and Vectors

Momentum Applet

Worksheet 1

Worksheet 2







Discuss Blended learning and Physics

Catapult Analysis

You built a catapult or trebuchet. Adjust it so that it is capable of launching a large marshmallow from a distance of 3 to 5 meters, and hitting a target that is .30 m high +/- .10 m. You will have 5 trials to hit your target at each distance on Friday, and will be graded according to your accuracy. (10 points)

Rubric and Questions for Analysis

Using your logger pro data, answer the questions below INDIVIDUALLY and hand in

Where is the biggest frictional issue in your machine? Explain why this matters to the range of your machine. (3 pts)
Determine the maximum range for your machine. Make at chart that lists all the variables available for y(up), y(down), and x. Below the table, show me or tell me how you arrived at each number.(15 points)
How could you determine F(net) of the projectile? (3 points)
How will the net force of the projectile change if we use marshmallows instead of paper wads? An orange? Why?(3 points)

Pick a change in time of .3 seconds somewhere on your data set. Based on your data, determine v(i) at the beginning of the interval and v(f) at the end of the interval in the x and the y directions Using this data, calculate a 'practical' value for the acceleration in the x and the acceleration in the y-directions. Choose your interval carefully so you are not mixing y(up) and y(down. (6 points)

Write a three to five paragraph summary of how you would change the design if you built another machine, and what you have learned about projectiles and engineering design. Include the following terms: potential energy to kinetic energy changes, frictional force, net force, acceleration of gravity, vectors, kinematic equations, independent x and y motions. (15 points)

Understanding Projectile Motion

Activity

Click to Run

On Friday, we will be testing the wonderful world of catapults. You need to bring a catapult to work on things Friday and Monday.

http://www.chicagotribune.com/features/sns-diy-kids-crafts-catapult,0,1489370.story
http://www.stormthecastle.com/catapult/how-to-build-a-catapult.htm
http://revision3.com/joegenius/projectiles/homemade-catapults
http://www.youtube.com/watch?v=bY43tGhUSJY
http://www.youtube.com/watch?v=mlGDJZzPRRU&feature=related
http://jimmythejock.hubpages.com/hub/thejockspot_how_to_build_a_catapult