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.

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Measurement
Measurements and Standards
video  - Standards of Measurement
Probability Board
Coordinate Systems and Vectors
Scaling
video  - Grains of Rice
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
Properties of Matter

### Measurements and Standards

#### Purpose:

A quick introduction to the concept of units of measure.

#### Procedure:

1. To give concept of primary and secondary standards, use aluminum block to 'calibrate' meter stick and calipers.
2. Measurement of fundamental units and their standards.
• Length: Beyond common examples already shown, discuss use of monochromatic light as a standard reproducible anywhere.
• Time: From ordinary to atomic clock, i.e., show clock, pendulum, electronic oscillator, stable atomic clock.
• Mass: Explain gravitiational and inertial mass. Compare unknown to known masses on balance and obtain density of three red blocks and determine the material they are made of.
• Pine - .51-.64 gm/cc; .640 kg total
• Aluminum - 2.7 gm/cc; 2.700 kg total
• Iron - 7-7.9 gm/cc; 7.9 kg total

#### Equipment:

• 1 Laser
• 1 Oscilloscope
• 1 Meter Stick
• 1 Vernier Calipers
• 1 Dual Pan Balance
• 1 Simple Pendulum
• 1 Oscillator
• 3 1000cc. red blocks
• 1 2"x2"x2" aluminum block