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

# Physics Demo Manual

Demonstrations are cataloged according to PIRA Bibliography

PLEASE REQUEST DEMOS WELL IN ADVANCE

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:
(Clicking a green button will add that demo to your list)
Measurement
Motion In One Dimension
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
Rotational Inertia Rods
video  - Rolling Objects and Moments of Inertia
video  - Moment of Inertia Wheel
video  - The Falling Rigid Body
video  - Vector Nature of Angular Momentum
Hero's engine
video  - Precession of Bicycle Wheel Under Gravity Force
Suitcase Gyro
Air Gyro
Gyrocompass
Gyroscopes
Euler's Disk
Tippe Top
Properties of Matter

### Air Gyro

#### Purpose:

To show precession of gyro around spin axis in relation to applied torque and also to show nutation.

#### Procedure:

Turn air on (only a small amount need to be used). Place gyro in position and start spinning by hand. The air gyro is extremely friction free and will rotate an extended period of time at very slow speeds. This facilitates close examination. A loop may be tied on one end of the string and this placed over the end of the gyro shaft (into the groove). When a torque is applied to the shaft, the gyro precesses in the appropriate direction. A swift, light, blow to the shaft will cause nutation. Weights and pulleys may also be used for a constant torque which causes a proportional rate of precession.

#### Equipment:

• Air Gyro Table
• Air Pump
• Gyro
• light string