Sat, Oct-19 Sun, Oct-20 Mon, Oct-21 NO SCHOOL Tue, Oct-22 Mouse Trap Car Prelim Wed, Oct-23 Mouse Trap Car Prelim Thu, Oct-24 Mouse Trap Car Prelim Fri, Oct-25 Mouse Trap Car Finals Sat, Oct-26 Sun, Oct-27
 90% LED BOARD 2020 2019 1.1 Measurement 86 1.2 Math Foundations 73 1.3 Vector Addition 90 2.1 Uniform Acceleration 0 2.2 Graphing Motion 0 2.3 Newton's Laws 0 3.1 Force Body Diagrams 0 3.2 Parallel Forces 0 4.1 Projectile Motion 0 4.2 Circular Motion 0 4.3 Rotational Motion 0 5.1 Work Eff./Power 0 5.2 Energy Conservation 0 5.3 Momentum 0 6.1 Wave Mechanics 0 7.1 Sound Characteristics 0 7.2 Sound Intensity 0 7.3 Doppler Effect 0 7.4 Strings & Tubes 0 8.1 Photoelectric Effect 0 9.1 Fluid Dynamics 0 Current Class Leader: TIE

Mastered each JEDI Trial!
Noah Graalfs
Alec Knepper
Peter Schumacher
Taylor Tiffin
Lukas Zerajic
Board Battles Theme Song!
© Peter Weihs & Colby Knight 2013
Bookmark this website on the home screen of your mobile device. Don't know how? Watch here!

# Inquiry: Air Track Physics

## Procedure:

Air tracks are devices for floating small carriages on an almost frictionless film of air along a metal track. We will be using the Photo Gate Timing mode in the Data Studio Program. In this Inquiry we have a 2.0 cm flag traveling through 2 photo gates that are 70.0 cm apart. Click the Setup button and check mark only "velocity in gate" and "time between gates".

## Constant Mass - Varying Force:

• Load 12 washers in the carriage and 2 washers on the end of the string.

• Mass everything and record the constant mass in your notebook.

• Mass the washers on the end and convert to force.

• Start the blower and let the air fill the track, click Start on the computer, release the carriage and then click stop.

• Record Vi, Vf and total time. Then calculate the acceleration rate.

• For the second run, repeat the procedure with 4 washers on the end of the string by transferring 2 washers from the carriage. This will change the force but keep the entire mass constant.

• Again, mass the washers on the end and convert to force.

• Repeat the procedure until you have made five runs each time adding 2 more washers to the end of the string from the carriage and record your data.

• Graph force on the y-axis and acceleration on the x-axis and use a trendline to determine the R-value and the slope of the line. Determine % error between the slope and the constant mass.

## Constant Force - Varying Mass:

• Use the same procedure as in part I, but this time keep 10 washers on the end of the string while changing the mass in the carriage.

• Record the constant force in your notebook. Also record Vi, Vf and total time. Then calculate the acceleration rate.

• Start with 10 lead squares in the carriage and remove 2 squares each time to reduce the mass in the carriage.

• Mass everything for your first trial.

• On each trial mass the two lead squares and subtract them from the mass.

• Graph acceleration on the y-axis and 1/mass on the x-axis and use a trendline to determine the R-value and the slope of the line. Determine % error between the slope and the constant force.