Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538

# Physics Demo Manual

Demonstrations are cataloged according to PIRA Bibliography

Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.

 Choose a Topic or Enter a keyword to search: I cannot find what I want! You have selected the following Demos: None Selected

Choose a subtopic:
Measurement
Motion In One Dimension
video  - Introduction to Lagrangian
AirPro Hockey pucks
video  - Marble and Feather
video  - Free Fall Acceleration
video  - Uniform Linear Acceleration - Time
video  - Uniform Linear Acceleration - Velocity
Propeller Cart on Track
Measurement of Free Fall Acceleration
Falling Drops of Milk
Falling Ball
Motion In Two Dimensions
Newton's First Law
Newton's Second Law
Newton's Third Law
Statics Of Rigid Bodies
Applications Of Newton's Laws
Gravity
Work and Energy
Momentum
Rotational Motion
Properties of Matter

### video  - Uniform Linear Acceleration - Velocity

#### Purpose:

To experimentally verify acceleration down an inclined air track is constant and approximately equal to g sin θ.

Note: this is the same as demo 1C20.30 Uniform Linear Acceleration - Time. The Capstone software measures the time between gates #1 & #2 and #1 & #3, and the instantaneous velocity at gates #2 and #3 (four parameters total).

#### Procedure:

DEMO VIDEO DOWNLOAD w/ sound / 1920x1080 / 24.19Mb/s / 384MB size

DEMO VIDEO DOWNLOAD w/ sound / 854x480 / 5.69Mb/s / 92MB size

Raise one end of air track on blocks of wood to provide an incline. Place photogates on air track so that there is 'x' distance between the starting point photogate #1 and gate #2. Place '4x' distance between the starting point photogate #1 and photogate #3. Place 1cm wide flag on air glider (cart). Position the glider at the starting point and release while at rest. The instantaneous velocity of the cart at gates #2 & #3 is automatically measured via the PASCO software.

#### Hints:

Use a 2.5cm or 5.0cm thick wood block to tilt air track.

• Air Glider
• Air Track
• Block
• Stop Watch