# 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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• #### I2-01: CROOKES' RADIOMETER

Stimulate discussion about radiative heat transfer and conservation of momentum with photons. Read More
• #### I2-03: CROOKE'S RADIOMETER - ROTATION REVERSAL

Counterintuitive demonstration of Crookes' radiometer designed to make students understand radiation better. Read More
• #### I2-04 WIEN'S LAW OF THERMAL RADIATION

Shows that higher temperature blackbodies radiate with shorter wavelengths Read More
• #### I2-05: LESLIE'S CUBE

Illustrate radiation from various surfaces. Read More

• #### I2-08 RADIATIVE HEAT TRANSFER

Shows radiation from a hot object Read More
• #### I2-09 DEWAR - TRANSPARENT WITH LIQUID NITROGEN

Demonstrates a dewar Read More
• #### I2-10: DEWARS - SILVERED AND UNSILVERED

Illustrate the function of silvering a dewar Read More
• #### I2-11: THERMOS BOTTLE

Show the parts of a standard thermos bottle. Read More
• #### I2-12: RADIATION FROM COLD OBJECT

Show radiation from a cold object Read More
• #### I2-21 THERMAL CONDUCTIVITY IN METALS

Demonstrates thermal conductivity in various metals Read More
• #### I2-22 THERMODYNAMICS BY TOUCH

Demonstrates that touching a material tells something about its conductivity, not necessarily its temperature Read More
• #### I2-24: THERMAL CONDUCTIVITY IN WATER

Demonstrate that water is a poor conductor of heat. Read More
• #### I2-26: LEIDENFROST PHENOMENON

Demonstrate the Leidenfrost effect. Read More
• #### I2-27: THERMAL EQUILIBRIUM BETWEEN ALUMINUM AND COPPER

Show process of thermal equilibrium happening between touching aluminum and copper cylinders. Read More
• #### I2-28: WATER BALLOON AND CANDLE

Show transfer of heat in water Read More
• #### I2-29: Thermal Conductivity - Metal Bars and Liquid Crystals

Show conduction of heat in metals Read More
• #### I2-41: CONVECTION - POWDER IN WATER

Illustrate convection. Read More
• #### I2-42: FALLING CANDLE

Demonstrate how a flame burns in the absence of normal convection. Read More
• #### I2-43: CONVECTION - HOT PLATE

See convection currents. Read More
• #### I2-44: CONVECTION - CANDLE IN CYLINDER

Demonstrate the mechanism of convection. Read More
• #### I2-45: CONVECTION - HIGH/LOW CANDLES IN CYLINDER

Brainteaser regarding convection. Read More
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