# Newton's Third Law

## C7-19: GAUSSIAN GUN

Category: C7 Collisions
Purpose: Demonstrate transfer of energy in an elastic collision

## G1-36: MASS ON SPRING WITH FORCE MEASUREMENT

Purpose: Display the time dependence of the force of a mass oscillating on a spring.

## G1-18: PENDULUM WITH FORCE SCALE

Purpose: Show the tension in the string exerted by a swinging pendulum.

## C6-05: AIR TRACK - INCLINED PLANE FRICTION

Category: C6 Friction
Purpose: Show that the force of friction depends upon the conditions of the surfaces in contact.

## C6-04: FRICTION DIRECTION ON INCLINED PLANE

Category: C6 Friction
Purpose: Determine the direction of the frictional force in a possibly ambiguous situation.

## C5-51: BALLISTOCARDIOGRAPHY

Purpose: Demonstrate the science of ballistocardiography

## C5-41: HOURGLASS PROBLEM

Purpose: Demonstrate the solution to the famous "hourglass problem," or Galileo's water bucket

## C5-31: AIR TRACK - SAILING UPWIND

Purpose: Show how force components can be used to sail against the wind.

## C5-20: PUTT PUTT STEAM BOAT

Purpose: Demonstrate action-reaction using an intriguing device.

## C5-16: HERO'S ENGINE

Purpose: Demonstrate action and reaction in a rotational system.

## C5-15: REACTION FORCE ON AIR BLOWER

Purpose: Demonstrate Newton's third law of motion

## C5-12: BALLISTIC CANNON CARTS

Purpose: Demonstrate Newton's third law of motion

## C5-11: AIR TRACK - ACTION-REACTION PAIRS

Purpose: Demonstrate Newton's third law of motion

## C5-01: NEWTON'S THIRD LAW - STATIC DYNAMOMETERS

Purpose: Demonstrate action-reaction in the static case

## C4-11: ACCELEROMETER - BALL IN WATER

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

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

Category: B3 Simple Machines
Purpose: Counterintuitive demonstration involving pulley system

## B3-03: LEVER - WRECKING BAR

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

## B2-16: VECTOR ADDITION WITH ROPE AND STUDENTS

Purpose: Demonstrate vector addition of forces

## B2-14: SUM OF FORCES - LARGE ROPE VERSION

Purpose: Develop a feel for equilibrium of forces on a large scale

## B2-12: EQUILIBRIUM OF FORCES - BOARD BACKGROUND

Purpose: Demonstrate equilibrium of forces
Page 1 of 2
• #### G1-01 EXAMPLES OF SIMPLE HARMONIC MOTION

Illustrates simple harmonic motion Read More
• #### G1-11 COMPARISON OF SHM AND UCM

Demonstrates the relationship between simple harmonic motion and uniform circular motion Read More
• #### G1-12: PENDULUM AND ROTATING BALL

Demonstrate that simple harmonic motion is the projection of uniform circular motion Read More
• #### G1-13: MASS ON STRING

Illustrate uniform circular motion Read More
• #### G1-14 PENDULA WITH DIFFERENT MASSES

Demonstrates independence of a simple pendulum's period with mass of the bob Read More
• #### G1-15 PENDULA WITH 4 TO 1 LENGTH RATIO

Shows that period of a simple pendulum is proportional to the square root of its length Read More
• #### G1-16: PENDULUM WITH LARGE OSCILLATION

Show the difference between pendula with small amplitude and large amplitude of oscillation, and to show rotational motion where the Read More
• #### G1-17: PENDULUM WITH LARGE-ANGLE OSCILLATION - PORTABLE

Illustrate large-angle pendular oscillations and the 360 degree pendulum Read More
• #### G1-18: PENDULUM WITH FORCE SCALE

Show the tension in the string exerted by a swinging pendulum Read More
• #### G1-20: GALILEO'S PENDULUM AND THE PENDULUM RELEASE CONUNDRUM

Encourage thought about the motion of a pendulum and related forces Read More
• #### G1-31: HOOKE'S LAW AND SHM

Quantitatively demonstrate how the spring constant affects the period of a mass on a spring Read More
• #### G1-32: MASS ON SPRING - WITH STAND

Illustrate SHM Read More
• #### G1-33 MASSES AND SPRINGS WITH SPIDER

Compares frequencies of various mass-spring combinations Read More
• #### G1-34: AIR TRACK - SIMPLE HARMONIC MOTION

Demonstrate simple harmonic motion of a mass held by two springs Read More
• #### G1-35: MASS ON SPRING - EFFICIENT MODEL

Illustrate the motion of a mass on a spring Read More
• #### G1-36: MASS ON SPRING WITH FORCE MEASUREMENT

Display the time dependence of the force of a mass oscillating on a spring Read More
• #### G1-37: MASS ON SPRING WITH ULTRASONIC RANGER

Plot graphs of position, velocity and acceleration for a mass oscillating on a spring Read More
• #### G1-41: TORSIONAL PENDULUM - SMALL

Demonstrate torsional SHM, and to show the effect of moment of inertia on the period Read More
• #### G1-43: KLINGER TORSIONAL VIBRATION MACHINE

Demonstrate torsional SHM, and to quantitatively show the effect of moment of inertia on the period Read More
• #### G1-51: INVERTED SPRING PENDULUM

Illustrate a form of periodic vibration Read More
• #### G1-52 STRINGLESS PENDULUM

Demonstrates an example of SHM Read More
• #### G1-53: SHM - CAN IN WATER TANK

Demonstrate one form of SHM Read More
• #### G1-54: MASS'S DOUBLE PENDULUM

Demonstrate the transition of potential energy into energy of oscillation of the pendulum, and the operation of an escapement Read More
• #### G1-55: INERTIA BALANCE

Illustrate the measurement of inertial mass using SHM Read More
• #### G1-56: INVERTED PENDULUM - SABER SAW

Show the inverted pendulum dramatically Read More
• #### G1-57: INVERTED PENDULUM - SPEAKER DRIVEN

Demonstrate the conditions for stability of an inverted pendulum Read More
• #### G1-58: LOADED PENDULUM

Analog to the longitudinal motion of a particle in a particle accelerator driven by a sinusoidal accelerating potential Read More
• #### G1-59: BIFILAR PENDULUM

Illustrate a system with two pendular modes of oscillation Read More
• #### G1-60 CHAOS - TWO BIFILAR PENDULA

Illustrates chaotic motion Read More
• #### G1-71: LISSAJOUS FIGURES - SAND PENDULUM

Demonstrate Lissajous figures Read More
• #### G1-73: LISSAJOUS FIGURES - FOURIER SYNTHESIZER

Show stable Lissajous figures Read More
• #### G1-74: LISSAJOUS FIGURES - LASER AND LOUDSPEAKER

Show Lissajous figures created by music to form a laser show Read More
• #### G1-81: OUIJA WINDMILL

Illustrate a combination of simultaneous orthogonal oscillations Read More
• #### G1-82: PENDULUM WAVES

Create waves in a very dramatic way using a series of fifteen carefully adjusted independent pendula Read More
• #### G1-83: PENDULUM WAVES - COMMERCIAL VERSION

Create waves in a very dramatic way using a series of carefully adjusted pendula of various lengths Read More
• 1