Waves and Oscillations

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3A 10.20 - Three Pendulums
	Demonstrates: Pendulum period is independent of mass. Description: Two pendulums with the same length arm but different masses, a third pendulum with a different length arm as the previous two but with same mass as one of them.

3A 10.30 - Torsional Pendulum
	Demonstrates: Torsional oscillation. Description: Two types: one cylinder, one triangle with screw rods to adjust masses at ends.

3A 15.10 - Physical Pendulum
	Demonstrates: A variation of arm type for pendulums. Description: Two types: meter sticks with hole drilled at ends, metal bars with fixed masses.

3A 20.11 - Oscillating Cart
	Demonstrates: Period of oscillation is independent of gravity. Description: Oscillate by perturbing the cart from equilibrium. As you tilt the track, the cart should continue to move with the same period. This shows that the period of oscillation is independent of gravity.

3A 30.10 - Tuning Fork under Strobe
	Demonstrates: The motion of the tuning fork. Description: The strobe light allows the class to see the motion of the tuning fork, while it is ringing.

3A 40.10 - Harmonic Motion and Rotating Marker.
	Demonstrates: Relationship between harmonic and oscillation motion. Description: Light source, mass on a spring, circular disk with paint cap. A specific oscillating mass for any given spring will appear to be in synch with the rotation of the disk.

3A 50.11 - Dampened Texas Tower
3A 50.11 - Dampened Texas Tower	Demonstrates: Dampened Oscillation Description: Texas Tower with cylinder of water to dampen mass on spring oscillation. Water will dampen system from reaching resonance.

3A 60.10 - Tacoma Narrows Video
	Demonstrates: Driven mechanical resonance. Description: Film of the Tacoma Narrows Bridge collapse.

3A 60.20 - Texas Tower
	Demonstrates: Resonance. Description: Variable oscillation driven mass and spring.

3A 70.10 - Wilberforce Pendulum
	Demonstrates: Simultaneous torsional and oscillational motion. Description: Cylindrical mass painted black and white and fixed to a spring.

3A 70.20 - Coupled Pendulum (Large)
	Demonstrates: Coupled harmonic motion. Description: Two side by side pendulums connected together by a spring at the mass ends.

3A 70.30 - Coupled Pendulum (Small)
	Demonstrates: Coupled harmonic motion. Description: Two side by side pendulums connected together by a spring at the mass ends.

3A 95.52 - Chaotic Pendulum (Old Model)
	Demonstrates: Chaotic motion. Description: Two pendulums that are attached at the hip.

3A 95.53 - Driven Chaotic Pendulum
	Demonstrates: Demonstrates driven damped oscillation, and chaotic motion. Description: A motor drives a platform, which has a weighted pendulum hanging from it.