1Q Rotational Dynamics

Ring & Disk of Equal Mass on an Incline

Catalog: 
1Q10.32
Location: 
Ad4
A ring and disk with the same diameter, width, and approximately the same mass are rolled down an incline.

Maxwell's Top

Tracer spiral of Maxwell's top
Catalog: 
1Q50.90
Location: 
Ae5
This gyro, very similar to the one designed by Prof. Maxwell, is designed to show that a gyroscope will always react at 90 degrees to an applied force. To show this the spindle of the heavy spinning wheel, which is pivoted at it's center of gravity, will follow an irregularly shaped object (in this case a Tracer Spiral).

Hinged Stick and Ball

Catalog: 
1Q20.50C
Location: 
Z 2

A ball jumps from the end of a hinged board into a cup as the stick rotates.

Three Balls Discrepant Event

One ball rolls slower than the other two.
Catalog: 
1Q10.450B
Location: 
Ad4
Three metal balls roll back and forth. When rolled one way all three balls roll side by side. When rolled the other way one ball rolls ahead of the other two. Students are challenged to explain why.

Racing Spheres

The steel sphere has a mass of 66 g and the hollow sphere has a mass of 21 g. Th
Catalog: 
1Q10.450A
Location: 
Ad4
A solid sphere is raced against a hollow sphere. They have the same diameter and similar mass.

Quantitative Yo-Yo

demonstration image
Catalog: 
1Q10.41
Location: 
Ae1
Sargent Welch#0580. Released simultaneously, different shapes have different accelerations as they slowly roll down their support strings.

Rotational Inertia: Racing Soups

The broth soup is very fluid while the split pea soup is solid. The cans are rac
Catalog: 
1Q10.50
Location: 
Ad4
This demonstration is a high drama comparison between the acceleration of split pea verses broth soups.

Rotational kinematics

The filmstrip is threaded into a small slit.
Catalog: 
1Q20.15
Location: 
Ad5
A small weight wound around a disk causes it to rotate. Science Workshop software is used to measure the acceleration of the weight.

Spinning Disk with Added Mass.

Mass of the PVC disk and axle is 418.1 g.
Catalog: 
1Q30.401
Location: 
Ad5
A horizontally spinning disk is turned by a mass/pulley system. Weight equal to the disk is added to the spinning disk.

Centrifugal Governor (Watt's)

demonstration image
Catalog: 
1Q40.23A
Location: 
Ad6
Cenco rotator accessory and govener

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