# Needs New Photo

## C4-11: ACCELEROMETER - BALL IN WATER

Purpose: Demonstrate the direction of acceleration for both linear and circular cases.

## C4-01: AIR TRACK - NEWTON'S SECOND LAW

Purpose: Demonstrate F = ma.

## C3-21: INERTIAL MASS CART

Purpose: Demonstrate the inertial property of mass

## C3-11: STRAW AND POTATO

Purpose: Illustrate inertia of motion

## C3-06: INERTIA: JENGA

Purpose: Demonstrate inertia of rest.

## C2-51: KINEMATICS WITH ULTRASONIC RANGER

Purpose: Plot graphs of position, velocity, and acceleration

## C2-24: WATER DROP PARABOLA

Purpose: Demonstrate the parabolic path of a projectile.

## C2-23: TRAJECTORY OF A BALL - MODEL

Purpose: Illustrate the position of a projectile at equal time intervals

## C2-10: CONSTANT VELOCITY - GALILEO'S EXPERIMENT

Purpose: Show constant velocity and uniform acceleration using a rolling body.

## C2-09: FREE FALL WITH STROBE

Purpose: Show the position of a dropped ball at a series of equal time intervals

## C2-04: FREE FALL WITH PHOTOCELL GATES

Purpose: Measure acceleration due to gravity

## C2-03: AIR TRACK - UNIFORM ACCELERATION - INCLINED

Purpose: Measure acceleration along an inclined air track.

## C2-02: AIR TRACK - DIRECT MEASUREMENT OF ACCELERATION

Purpose: Measure acceleration using two different procedures

## C1-21: AIR TABLE - TOPPLING STICK

Purpose: Illustrate how a rigid rod topples on a frictionless surface.

## C1-13: AIR TRACK - REDUCED MASS

Purpose: Demonstrate the change in frequency for two-body oscillations.

## C1-12: AIR TRACK - CENTER OF MASS OF COUPLED GLIDERS

Purpose: Demonstrate uniform motion of the center of mass of an oscillating system.

## C1-11: AIR TRACK - CENTER OF MASS PENDULUM

Purpose: Show uniform motion of the center of mass of a vibrating pendulum/glider system.

## C1-04: CENTER OF MASS - BEAR ON TIGHT ROPE

Purpose: Show stability in system where the center of mass is outside of the object.

## C1-03: CENTER OF MASS MOTION - CLOWN

Purpose: Illustrate rotation about the center of mass of an irregular object.

## N1-31: SUN DOG - MODEL

Purpose: Show how a "sun dog" is formed.
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• #### B4-01 HOOKE'S LAW

Demonstrate the linear relationship between force and stretching for a simple spring. Read More
• #### B4-02: HOOKE'S LAW - COMPRESSING A SPRING

Demonstrate Hooke's law for a spring under compression. Read More
• #### B4-03: SPRINGS IN SERIES AND PARALLEL

Show static combinations of springs Read More
• #### B4-04: SPRING AND STRING THING

Illustrate series and parallel springs in a counterintuitive way. Read More
• #### B4-11: ELASTIC LIMIT OF RUBBER BAND

Demonstrate Hooke's law and elastic limit. Read More
• #### B4-12: ELASTIC LIMIT OF SOLDER SPRING

Demonstrate the elastic limit for an inherently inelastic object. Read More

• #### B4-14: ELASTIC LIMIT OF WIRE

Demonstrate the variation in tensile strength with wire diameter. Read More
• #### B4-21: DEFLECTION OF BEAM - OPTICAL LEVER

Demonstrate the small deflection of an aluminum beam due to weighting between supports. Read More
• #### B4-31: FAILURE OF WOOD IN COMPRESSION

Demonstrate the dependence of the compressional strength of wooden dowels on their diameter and length. Read More
• #### B4-32: CAN CRUSHER - WALL STABILITY

Show how a small change in the geometry of the can wall can dramatically affect its ability to support a Read More
• #### B4-33: EGG CRUSHER

Show that an egg can support unexpectedly high forces due to its curved shape. Read More
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