# Rotational Dynamics

## D1-55: ROTATING ELASTIC RINGS

Purpose: Demonstrate "centrifugal reaction" and to indicate why the earth is oblate.

## D1-43: INERTIAL FORCES - BALLS IN ROTATING JARS

Purpose: Demonstrate inertial forces in bodies submerged in air and in water.

## D1-42: ROTATING WATER BUCKET WITH SPONGE

Purpose: Illustrate centripetal force and centrifugal reaction with a trick.

## D1-40: CENTRIPETAL FORCE ON ROTATING RUBBER BAND

Purpose: Demonstrate centripetal force and centrifugal reaction.

## D1-39: PENNY AND COAT HANGER

Purpose: Demonstrate centripetal force and centrifugal reaction in a dramatic way.

## D1-36: AIR TABLE - CENTRIPETAL FORCE

Purpose: Show that centripetal force varies with angular velocity.

## D1-32: TRAJECTORY FROM CIRCULAR ORBIT

Purpose: Show that the instantaneous velocity of an object executing uniform circular motion is tangent to the circle.

## D1-31: TRAJECTORY FROM SPIRAL

Purpose: Show that forces are required to create circular motion.

## D1-30: TRAJECTORY FROM CIRCULAR ORBIT - OVERHEAD PROJECTOR

Purpose: Show that the instantaneous velocity of an object executing uniform circular motion is tangent to the circle.

## D1-21: ANGULAR VELOCITY - OBERBECK CROSS

Purpose: Measure the angular velocity of a rotating object.

## D1-12: ADDITION OF ANGULAR VELOCITIES

Purpose: Illustrate the complex motion resulting from addition of two angular velocities.

## D1-11: CYCLOID - LIGHT BULB ON WHEEL

Purpose: Demonstrate cycloidal motion.

## C7-44: COLLISIONS - HOVERPUCKS

Category: C7 Collisions
Purpose: Demonstrate two-dimensional collisions.

## C7-42: AIR TABLE - COLLISIONS OF PUCKS

Category: C7 Collisions
Purpose: Qualitatively demonstrate elastic and inelastic two-dimensional collisions.

## C6-12: SKIDDING AUTOMOBILE

Category: C6 Friction
Purpose: Demonstrate the effect of locked wheels on vehicle stability.

## C4-13: ACCELEROMETER ON ROTATOR

Purpose: Show that the surface of a rotating liquid assumes a parabolic shape.

## B2-31: EQUILIBRIUM OF TORQUES - WHEELS AND AXLES

Purpose: Demonstrate equilibrium of torques

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

Purpose: Introduce the concept of torque

## D4-22: MONORAIL CAR

Category: D4 Gyroscopes
Purpose: Demonstrate gyroscopic stability

## D5-13: FOCAULT PENDULUM - MODEL

Purpose: Model the Foucault pendulum
Page 4 of 6
• #### L3-01: OPTICAL BOARD - CONVEX SPHERICAL MIRROR

Show reflection of light rays from a convex mirror Read More
• #### L3-02: OPTICAL BOARD - RAY DIAGRAM - CONVEX MIRROR

Determine the image position for an object in front of a convex mirror using the three principal rays Read More
• #### L3-03 LARGE CONVEX MIRROR (60cm)

Show the image of a convex mirror Read More
• #### L3-11: OPTICAL BOARD - CONCAVE SPHERICAL MIRROR

Illustrate reflection from a concave spherical mirror Read More
• #### L3-12: OPTICAL BOARD - RAY DIAGRAM - CONCAVE MIRROR

Locate the image of a concave mirror by using the three principal rays Read More
• #### L3-13: OPTICAL BOARD - SPHERICAL ABERRATION IN CONCAVE MIRROR

Show spherical aberration in a spherical mirror Read More
• #### L3-14 LARGE CONCAVE MIRROR (60cm)

Illustrate the types of images created by a concave mirror Read More
• #### L3-16 FOCUSING OF HEAT WAVES BY MIRRORS

Demonstrate that concave mirrors can focus heat waves Read More
• #### L3-18: FOCUSING OF HEAT WAVES - OVERHEAD PROJECTOR

Illustrate focusing of heat in a very dramatic way Read More
• #### L3-19 PENNY AND PARABOLIC MIRRORS

Classic illusion of penny levitating above a pair of parabolic concave mirrors Read More
• #### L3-20: APPARENT REFLECTION FROM REAL IMAGE

Illusion of laser beam reflecting off an image Read More
• #### L3-21: LIGHT BULB AND PARABOLIC MIRROR

Optical illusion with real image of a concave mirror Read More
• #### l3-22: MIRAGE

Demonstrate an optical illusion using concave mirrors Read More
• #### L3-23: IMAGE ON SCREEN USING CONCAVE MIRROR

Show an image produced by a concave mirror Read More
• #### L3-24: OPTICAL BOARD - SPHERICAL AND PARABOLIC MIRRORS

Demonstrate the difference in spherical aberration between concave spherical and parabolic mirrors Read More
• #### L3-25: IMAGE LOCATION WITH TV CAMERA - CONCAVE MIRROR

Locate the image position for a concave mirror Read More
• #### L3-26: PENDULUM AND SPHERICAL MIRROR

Optical illusion using concave mirror Read More
• #### L3-31 GIANT 160cm MIRROR - CONCAVE AND CONVEX

Dramatic demonstration of images of concave and convex mirrors Read More
• #### L3-32: CYLINDRICAL MIRROR DEMONSTRATOR

Demonstration of cylindrical concave and convex mirrors Read More
• #### L3-33: VANITY MIRROR

Show the image produced by a concave mirror Read More
• #### L3-41: ANAMORPHIC ART

Demonstrate a type of anamorphic art Read More
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