1 Mechanics

One Rope and Three Weights

The middle weight is increased.  ASU copyright
Catalog: 
1J30.26
Location: 
Ab6
A rope is tied to a pole and a heavy weight hangs from a pulley at the other end. There are protractors to measure the deflection of the rope. In the middle a small weight is applied which easily moves the heavy weight.

Accelerometers - Video

demonstration image
Catalog: 
1G20.76B
Location: 
3_1
Video Encyclopedia :Two jars of water, one has a light ball tethered to the bottom, the other has a heavy ball suspended from the top.

Inertia balance - Video

demonstration image
Catalog: 
1F10.11
Location: 
3_1
Video Encyclopedia :Place masses on a platform supported by horizontal leaf springs.

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.

Kinetic and Static Friction

A rolling ball does not move with respect to the surface it is rolling on.
Catalog: 
1K20.30A
Location: 
A ball is rolled on a transparent surface so that the students can see that the part of the rolling ball that makes contact is not moving with respect to that surface.

Torsion pendulum inertia

Many objects can be mounted on the torsion pendulum.
Catalog: 
1Q10.20B
Location: 
Ad1
Torsion pendulum inertia

Helicopter Rotor - Video

demonstration image
Catalog: 
1H10.25
Location: 
3_1
Video Encyclopedia: A symmetric propeller deflects air down, causing upward lift.

Gravitational well

A deformed rubber sheet acts as a gravity well. Balls and other objects roll aro
Catalog: 
1L20.10
Location: 
0-0
Rubber sheet with grid is stretched on a frame. One or two rods can be pressed into the sheet at locations along a diagonal.

Pages