# PHYS121

## B4-12: ELASTIC LIMIT OF SOLDER SPRING

Category: B4 Elasticity
Purpose: Demonstrate the elastic limit for an inherently inelastic object.

## B4-11: ELASTIC LIMIT OF RUBBER BAND

Category: B4 Elasticity
Purpose: Demonstrate Hooke's law and elastic limit.

## B4-04: SPRING AND STRING THING

Category: B4 Elasticity
Purpose: Illustrate series and parallel springs in a counterintuitive way.

## D1-32: TRAJECTORY FROM CIRCULAR ORBIT

Purpose: Show that the instantaneous velocity of an object executing uniform circular motion is tangent to the circle.

## C7-16: HAPPY AND UNHAPPY BALLS

Category: C7 Collisions
Purpose: Illustrate coefficient of restitution.

## C7-13: COLLISIONS OF BALLS - GRADUATED MASSES

Category: C7 Collisions
Purpose: Demonstrate how the velocity is multiplied by a sequence of collisions between balls of decreasing mass.

## C7-03: AIR TRACK - SCATTERING WITHOUT CONTACT

Category: C7 Collisions
Purpose: Show that elastic scattering can occur between two objects without actual physical contact between the objects.

## C8-34: POWER - INSTRUCTOR DRAGGING CONCRETE BLOCK

Purpose: Demonstrate power

## C8-32: POWER - CLIMBING LADDER

Purpose: A simple method for illustrating power and the unit of the horsepower.

## C8-13: BUNGEE JUMPER MODEL

Purpose: Determine the minimum value of the spring constant of a bungee rope to ensure a safe jump.

## C8-03: GALILEO'S PENDULUM

Purpose: Demonstrate conservation of energy in a simple system.

## C6-11: SLIDING FRICTION - LECTURE TABLE AND FELT

Category: C6 Friction
Purpose: Show the effect on frictional force of velocity, normal force, and contact area.

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

Purpose: Demonstrate Newton's third law of motion

## C4-42: TERMINAL VELOCITY - FEATHER

Purpose: Illustrate terminal velocity.

## 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.

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

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

## B2-04: VERTICAL FORCES - FOUR SPRING SCALES

Purpose: Show addition of forces along a line

## B1-14: CENTER OF MASS - BOTTLE

Purpose: Illustrate the center of mass in a surprising way

## B1-13: CENTER OF MASS - FORK AND SPOON ON TOOTHPICK

Purpose: Illustrate the center of mass in a surprising way
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• #### F5-01: TOY CAR AND BALL - COANDA EFFECT

Demonstrate levitation of a ball in a cute way. Read More
• #### F5-02: BALL ABOVE MOVING CART - COANDA EFFECT

Demonstrate levitation of a ball by an air stream. Read More
• #### F5-03: THIN METAL SHEETS - COANDA EFFECT

Demonstrate a fluid-flow model of the vocal folds. Read More
• #### F5-04: LARGE BALL AND FUNNEL - COANDA EFFECT

Illustrate the Coanda effect in a dramatic way. Read More
• #### F5-05: SMALL BALL AND FUNNEL - COANDA EFFECT

Illustrate the Coanda effect in a dramatic way. Read More
• #### F5-06 BEACH BALL - COANDA EFFECT

Illustrates the Coanda effect Read More
• #### F5-07: SPOOL AND CARDBOARD

Illustrate properties of fluid flow in a counterintuitive way. Read More
• #### F5-08: MARBLE IN WATER JET

Demonstrate levitation by a water stream. Read More
• #### F5-09 HAIRDRYER AND PING PONG BALL - COANDA EFFECT

Demonstrate levitation by an air stream. Read More
• #### F5-10: CHIMNEY DRAW WITH WATER

Illustrate the concept of chimney draw. Read More
• #### F5-11: AIRPLANE WING

Illustrate the pressure difference across an airplane wing. Read More
• #### F5-21 VENTURI TUBE WITH MANOMETERS

Illustrates the venturi effect Read More
• #### F5-22 VENTURI TUBE WITH PING PONG BALLS

Illustrates the venturi effect Read More
• #### F5-24: VENTURI TUBE WITH WATER - MANOMETERS

Illustrate the Venturi effect in water. Read More
• #### F5-31: MAGNUS EFFECT - FLETTNER'S SHIP

Demonstrate the Magnus effect. Read More
• #### F5-32: CURVE BALL

Demonstrate a curve ball as an example of the Magnus effect Read More