# Statics of Rigid Bodies

## B1-18: Center of Mass - Soda Can and Water

Purpose: To demonstrate how an object's behaviour can change when its center of mass does

## F2-25: BALANCE PARADOX - BUOYANCY WITH CROSSOVER

Category: F2 Buoyancy
Purpose: Present buoyancy in a paradoxical way.

## D2-05: DUMBBELL - VARIABLE MOMENT OF INERTIA

Purpose: Demonstrate the effect of moment of inertia.

## D2-04: MOMENT OF INERTIA RODS

Purpose: Demonstrate dynamic effects of the center of mass and moment of inertia

## B4-33: EGG CRUSHER

Category: B4 Elasticity
Purpose: Show that an egg can support unexpectedly high forces due to its curved shape.

## B4-32: CAN CRUSHER - WALL STABILITY

Category: B4 Elasticity
Purpose: Show how a small change in the geometry of the can wall can dramatically affect its ability to support a load.

## B4-31: FAILURE OF WOOD IN COMPRESSION

Category: B4 Elasticity
Purpose: Demonstrate the dependence of the compressional strength of wooden dowels on their diameter and length.

## B4-21: DEFLECTION OF BEAM - OPTICAL LEVER

Category: B4 Elasticity
Purpose: Demonstrate the small deflection of an aluminum beam due to weighting between supports.

## B4-14: ELASTIC LIMIT OF WIRE

Category: B4 Elasticity
Purpose: Demonstrate the variation in tensile strength with wire diameter.

## B4-13: ELASTIC LIMIT OF A BALLOON

Category: B4 Elasticity
Purpose: Burst a balloon.

## B4-12: ELASTIC LIMIT OF SOLDER SPRING

Category: B4 Elasticity
Purpose: Demonstrate the elastic limit for an inherently inelastic object.

## B4-11: ELASTIC LIMIT OF RUBBER BAND

Category: B4 Elasticity
Purpose: Demonstrate Hooke's law and elastic limit.

## B4-04: SPRING AND STRING THING

Category: B4 Elasticity
Purpose: Illustrate series and parallel springs in a counterintuitive way.

## B4-02: HOOKE'S LAW - COMPRESSING A SPRING

Category: B4 Elasticity
Purpose: Demonstrate Hooke's law for a spring under compression.

## C6-03: INCLINED PLANE - FRICTION WITH THREE BLOCKS

Category: C6 Friction
Purpose: Illustrate different coefficients of friction.

## C4-61: ACCELERATION ON A SCALE

Purpose: Illustrate forces in an accelerating system.

## C3-06: INERTIA: JENGA

Purpose: Demonstrate inertia of rest.

## B3-21: CHISEL AS WEDGE

Category: B3 Simple Machines
Purpose: Demonstrate the mechanical advantage of a wedge

## B3-15: FOOL'S TACKLE

Category: B3 Simple Machines
Purpose: Illustrate analysis of forces in a pulley system

## B3-14: EQUILIBRIUM PARADOX - SCALES AND PULLEY

Category: B3 Simple Machines
Purpose: Counterintuitive demonstration involving pulley system
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• #### C4-01: AIR TRACK - NEWTON'S SECOND LAW

Demonstrate F = ma Read More
• #### C4-02 AIR TRACK - A eq F/M

Illustrate the experimental basis for Newton's second law of motion Read More
• #### C4-03: ACCELERATION BY ITERATED BLOWS

Illustrate the numerical technique by which a computer carries out integration of the equation a = F/m Read More
• #### C4-11: ACCELEROMETER - BALL IN WATER

Demonstrate the direction of acceleration for both linear and circular cases Read More
• #### C4-12: ACCELEROMETER ON INCLINED PLANE

Illustrate the behavior of a liquid accelerometer accelerating down an inclined plane Read More
• #### C4-13: ACCELEROMETER ON ROTATOR

Show that the surface of a rotating liquid assumes a parabolic shape Read More
• #### C4-14: AIR TRACK - ACCELEROMETER

Demonstrate the behavior of a liquid accelerometer Read More
• #### C4-15: HELIUM BALLOON IN ACCELERATED BOX

Illustrate the affect of density on acceleration in a counterintuitive way Read More
• #### C4-21 ATWOOD MACHINE

Illustrate the second law of motion. Experimentally determine the acceleration due to gravity Read More
• #### C4-22: HORIZONTAL ATWOOD MACHINE

Demonstrate the Horizontal Atwood Machine quantitatively Read More
• #### C4-23: ATWOOD MACHINE WITH HEAVY PULLEY

Illustrate the effect of a heavy pulley on the Atwood Machine Read More
• #### C4-31: AIR TRACK - THE ACCELERATION OF GRAVITY

Experimentally determine the acceleration of gravity Read More
• #### C4-32: FREE FALL IN VACUUM - DISK AND FEATHER

Demonstrate that bodies of extremely different densities fall with equal acceleration in the absence of air friction Read More
• #### C4-33 FREE FALL IN VACUUM - FEATHER AND BALL

Demonstrate that bodies that fall with unequal accelerations in air fall with the same acceleration in the absence of air Read More
• #### C4-34: GALILEO'S EXPERIMENT - MASSES IN FREE FALL

Show that the acceleration of bodies in free fall is independent of mass Read More
• #### C4-41: TERMINAL VELOCITY - BOTTLE IN TUBE

An easily observable terminal velocity experiment Read More
• #### C4-42: TERMINAL VELOCITY - FEATHER

Illustrate terminal velocity Read More
• #### C4-43: TERMINAL VELOCITY - STACKED COFFEE FILTERS

Illustrate terminal velocity quantitatively Read More
• #### C4-51: WEIGHTLESSNESS IN FREE FALL - MASS IN BEAKER

Demonstrate weightlessness in free fall Read More
• #### C4-52 WEIGHTLESSNESS IN FREE FALL - MASS IN CUP ON POLE

Illustrate apparent weightlessness in free fall Read More
• #### C4-53 WEIGHTLESSNESS IN FREE FALL - MASS ON SPRING

Illustrate apparent weightlessness in free fall Read More
• #### C4-54: WEIGHTLESSNESS IN FREE FALL - MAGNET AND KEEPER

Illustrate weightlessness in free fall Read More
• #### C4-61: ACCELERATION ON A SCALE

Illustrate forces in an accelerating system Read More
• #### C4-62 DROPPED SLINKY

Illustrate apparent weightlessness in free fall Read More
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