# Engineering

Category: K7 RLC Circuits
Purpose: Demonstrate a barricade flasher circuit.

## K2-47: SPEEDOMETER MODEL

Purpose: Demonstrate operating principle of some speedometers.

## J7-31: VISIBLE HARD DRIVE

Purpose: See what the guts of a fixed magnetic drive look like.

## F5-31: MAGNUS EFFECT - FLETTNER'S SHIP

Purpose: Demonstrate the Magnus effect.

## G1-54: MASS'S DOUBLE PENDULUM

Purpose: Demonstrate the transition of potential energy into energy of oscillation of the pendulum, and the operation of an escapement.

## F4-53: ARCHIMEDES' SCREW

Category: F4 Fluid in Motion
Purpose: Demonstrate a pump mechanism invented by Archimedes.

## F4-51: VACUUM PUMP MODEL

Category: F4 Fluid in Motion
Purpose: Illustrate how a mechanical vacuum pump works.

## F2-12: HOT AIR BALLOON

Category: F2 Buoyancy
Purpose: Show that hot air is less dense than cold air by operating a hot air balloon.

## F1-14: PISTON DIAMETER VS TRAVEL - WORKING MODEL

Purpose: Show that with an incompressible fluid the bigger piston moves more slowly than the smaller piston.

## F1-11: HYDRAULIC PRESS

Purpose: Demonstrate dramatically Pascal's Law and the large forces attainable using hydraulic systems.

## D4-23: GYROCOMPASS

Category: D4 Gyroscopes
Purpose: Illustrate the operation of the gyrocompass.

## D4-21: SHIP STABILIZER

Category: D4 Gyroscopes
Purpose: Demonstrate how a gyroscope can stabilize the rocking of a ship.

## D2-12: TOPPLING CHIMNEY

Purpose: Demonstrate how a toppling chimney breaks up.

## B4-14: ELASTIC LIMIT OF WIRE

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

## E2-42: TELESCOPE MODEL

Category: E2 Astronomy
Purpose: Show how a telescope can view any point in the sky using a universal mount.

## B1-16: CORBELED ARCH

Purpose: Illustrate how the center of mass affects the stability of an arch

## A2-32: HEIGHT MEASUREMENT BY TRIGONOMETRY

Category: A2 Mathematics
Purpose: Determine the height of a student using trigonometry

## A1-43: CROSSING RODS

Purpose: Visualize three-dimensional figures

## A1-42: DRAWING PUZZLE - HALF CUBE

Purpose: Visualize three-dimensional figures

## A1-41: DRAWING PUZZLE - INTERSECTING RODS

Purpose: Visualize three-dimensional figures
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• #### D2-01 RING AND DISC ON INCLINED PLANE

Demonstrates effect of rotational inertia on acceleration of an object Read More
• #### D2-02: Miscellaneous Rolling Bodies On Inclined Plane

Demonstrates effect of rotational inertia on acceleration of an object Read More
• #### D2-03: CANS ON INCLINED PLANE - WITH AND WITHOUT WATER

Illustrate the effect of moment of inertia on rolling acceleration. Read More
• #### D2-04: MOMENT OF INERTIA RODS

Demonstrate dynamic effects of the center of mass and moment of inertia Read More
• #### D2-05: DUMBBELL - VARIABLE MOMENT OF INERTIA

Demonstrate the effect of moment of inertia. Read More
• #### D2-11: HINGED STICK AND FALLING BALL

Application of the rotational analog of Newton's second law. Read More
• #### D2-12: TOPPLING CHIMNEY

Demonstrate how a toppling chimney breaks up. Read More
• #### D2-13: RACING PENDULA

Illustrate in a counter-intuitive way the effect of moment of inertia on rotational acceleration. Read More
• #### D2-21: CENTER OF PERCUSSION - BAT AND MALLET

Demonstrate the center of percussion using a baseball bat. Read More
• #### D2-31 OBERBECK CROSS

Illustrates rotational analog of Newton's second law of motion Read More
• #### D2-32: AIR TABLE - LINEAR AND ANGULAR ACCEL OF A DISC

Illustrate the accelerating disc problem. Read More
• #### D2-41: MOMENTS OF INERTIA ABOUT THREE PRINCIPAL AXES

Illustrate the three principal axes of a thin aluminum plate. Read More
• #### D2-42: MOMENT OF INERTIA -TORSIONAL CHAIR AND BOARD

Demonstrate moment of inertia using the torsional chair. Read More
• #### D2-43: MOMENT OF INERTIA - TORSIONAL CHAIR AND WEIGHTS

Demonstrate the effect of moment of inertia. Read More
• #### D2-51: BICYCLE WHEEL PENDULUM

Demonstrate the Parallel Axis Theorem. Read More
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