# Rotational Dynamics

## D3-33: Centripetal Acceleration - Rotating Ball and Brick

Purpose: To illustrate centripetal acceleration and the associated forces

## J5-30: OMEGA LEVITRON

Category: J5 Magnetostatics
Purpose: Show an interesting demonstration of magnetism.

## G3-20: WAVE APPARATUS

Purpose: Demonstrate transverse and longitudinal wave motion.

## G1-12: PENDULUM AND ROTATING BALL

Purpose: Demonstrate that simple harmonic motion is the projection of uniform circular motion.

## F4-22: SPINNING WATER BUCKET

Category: F4 Fluid in Motion
Purpose: Illustrate the reaction force on spinning water and the shape of the water surface.

## F4-21: LIQUID IN SPINNING SPHERE

Category: F4 Fluid in Motion
Purpose: Show the behavior of a liquid when subjected to a centripetal force.

## D5-24: ROTATING PENDULA - LENGTH VS. HEIGHT

Purpose: Show that pendula of different length suspended from the same point rotating at the same angular speed rise to the same vertical height.

## D5-23: ROTATING BEAD ON LOOP

Purpose: Demonstrate the presence of a "critical parameter" which determines the dynamic behavior of a simple physical system.

## D5-22: ROTATING PENDULUM

Purpose: Demonstrate the presence of a "critical parameter" which determines the dynamic behavior of a simple physical system.

## D5-21: BALL ROLLING ON ROTATING DISC

Purpose: Show that a sphere rolling on a rotating disc will move in circles.

## D5-12: CORIOLIS EFFECT - WATER JET

Purpose: Model the Coriolis effect.

## D5-11: CORIOLIS EFFECT - BALL ON ROTATING PLATFORM

Purpose: Illustrate the Coriolis effect.

## D5-08: WINEGLASS AND OLIVE

Purpose: Conundrum involving angular motion.

## D5-07: STABLE AND UNSTABLE PRINCIPAL AXES

Purpose: Show that rotation about the principal axis of smaller moment of inertia is unstable and changes to rotation about the principal axis of maximum moment of inertia.

## D4-27: EULER'S DISK

Category: D4 Gyroscopes
Purpose: Demonstrate kinematics and inertia.

## D5-06: FIDDLESTICK

Purpose: Illustrate weird rotational effects and to demonstrate transformation of gravitational potential energy into rotational energy.

## D5-04: SPINNING BOOK

Purpose: Illustrate the effect rotation about the various principal axes on stability.

## D5-02: FOOTBALL

Purpose: Example of a gyroscopic effect.

## D3-41: AIR TABLE - RECTANGULAR PUCK COLLISIONS

Purpose: Qualitatively show conservation of angular momentum in collisions of a circular puck with a rectangular puck.

## D3-32: KEYWHIP

Purpose: Demonstrate angular momentum conservation in a surprising way.
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• #### B2-02: SUM OF FORCES - SPRING SCALES

Show that the sum of forces exerted on the mass by the scales is constant Read More
• #### B2-03: EQUILIBRIUM OF FORCES - INCLINED PLANE

Demonstrate equilibrium of forces Read More

• #### B2-11: EQUILIBRIUM OF FORCES - OHAUS PROJECTION

Demonstrate equilibrium of forces Read More
• #### B2-12: EQUILIBRIUM OF FORCES - BOARD BACKGROUND

Demonstrate equilibrium of forces Read More
• #### B2-14: SUM OF FORCES - LARGE ROPE VERSION

Develop a feel for equilibrium of forces on a large scale Read More

• #### B2-21: CONCEPT OF TORQUE - TORSIONAL CHAIR

Introduce the concept of torque Read More
• #### B2-22: TORQUE - PHYSICAL DEFINITION

Introduce the concept of torque Read More
• #### B2-23: TORQUE CONDITION FOR EQUILIBRIUM

Demonstrate that equilibrium of forces is an insufficient condition for static equilibrium Read More
• #### B2-31: EQUILIBRIUM OF TORQUES - WHEELS AND AXLES

Demonstrate equilibrium of torques Read More

• #### B2-34: EQUILIBRIUM OF TORQUES - ANGLE BRACKET

Verify the equation for torques when the center of mass is outside the object Read More
• #### B2-35: EQUILIBRIUM OF TORQUES ON METERSTICK

Demonstrate equilibrium of torques Read More
• #### B2-36: EQUILIBRIUM OF TORQUES ON METERSTICK - ROTATORS

Demonstrate equilibrium of torques Read More