# 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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• #### F1-01 FLUID PRESSURE VS. DEPTH

Demonstrates that fluid pressure increases linearly with depth and is isotropic. Read More
• #### F1-02: FLUID PRESSURE VS DEPTH - ANEROID GAUGE

Show water pressure versus depth with an aneroid gauge. Read More
• #### F1-03: PASCAL'S VASES

Show water pressure versus depth with an aneroid gauge. Read More
• #### F1-04: EQUILIBRIUM TUBES

Demonstrate that pressure is transmitted equally throughout a fluid. Read More
• #### F1-05: DOES WATER SEEK ITS OWN LEVEL?

A trick to challenge the students. Read More
• #### F1-06 WATER SEEKS ITS OWN LEVEL

Demonstrate that pressure is dependent only on depth, and not on the shape of the container. Read More
• #### F1-11: HYDRAULIC PRESS

Demonstrate dramatically Pascal's Law and the large forces attainable using hydraulic systems. Read More
• #### F1-12: PASCAL'S LAW - COILED TUBE PARADOX

Illustrate Pascal's law in a dramatic way. Read More
• #### F1-13: CONSTANT WATER PRESSURE

Demonstrate a mechanism which produces a constant water pressure. Read More
• #### F1-14: PISTON DIAMETER VS TRAVEL - WORKING MODEL

Show that with an incompressible fluid the bigger piston moves more slowly than the smaller piston. Read More
• #### F1-15: PRESSURE GLOBE

Demonstrate principles of air pressure. Read More
• #### F1-21: LIPLESS STRAW

Demonstrate the role of atmospheric pressure in the operation of a drinking straw. Read More
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