# Newton's Second Law

## I2-42: FALLING CANDLE

Purpose: Demonstrate how a flame burns in the absence of normal convection.

## 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.

## C4-61: ACCELERATION ON A SCALE

Purpose: Illustrate forces in an accelerating system.

## C4-54: WEIGHTLESSNESS IN FREE FALL - MAGNET AND KEEPER

Purpose: Illustrate weightlessness in free fall.

## C4-51: WEIGHTLESSNESS IN FREE FALL - MASS IN BEAKER

Purpose: Demonstrate weightlessness in free fall.

## C4-43: TERMINAL VELOCITY - STACKED COFFEE FILTERS

Purpose: Illustrate terminal velocity quantitatively.

## C4-42: TERMINAL VELOCITY - FEATHER

Purpose: Illustrate terminal velocity.

## C4-41: TERMINAL VELOCITY - BOTTLE IN TUBE

Purpose: An easily observable terminal velocity experiment.

## C4-32: FREE FALL IN VACUUM - DISK AND FEATHER

Purpose: Demonstrate that bodies of extremely different densities fall with equal acceleration in the absence of air friction.

## C4-31: AIR TRACK - THE ACCELERATION OF GRAVITY

Purpose: Experimentally determine the acceleration of gravity.

## C4-23: ATWOOD MACHINE WITH HEAVY PULLEY

Purpose: Illustrate the affect of a heavy pulley on the Atwood Machine.

## C4-22: HORIZONTAL ATWOOD MACHINE

Purpose: Demonstrate the Horizontal Atwood Machine quantitatively.

## C4-15: HELIUM BALLOON IN ACCELERATED BOX

Purpose: Illustrate the affect of density on acceleration in a counterintuitive way.

## C4-14: AIR TRACK - ACCELEROMETER

Purpose: Demonstrate the behavior of a liquid accelerometer.

## C4-13: ACCELEROMETER ON ROTATOR

Purpose: Show that the surface of a rotating liquid assumes a parabolic shape.

## C4-12: ACCELEROMETER ON INCLINED PLANE

Purpose: Illustrate the behavior of a liquid accelerometer accelerating down an inclined plane.

## C4-11: ACCELEROMETER - BALL IN WATER

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

## C4-03: ACCELERATION BY ITERATED BLOWS

Purpose: Illustrate the numerical technique by which a computer carries out integration of the equation a = F/m.

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

Purpose: Demonstrate F = ma.
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• #### 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

• #### G1-33 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

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

• #### G1-73: 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
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