# PHYS141

## C4-22: HORIZONTAL ATWOOD MACHINE

Purpose: Demonstrate the Horizontal Atwood Machine quantitatively.

## C2-09: FREE FALL WITH STROBE

Purpose: Show the position of a dropped ball at a series of equal time intervals

## C1-21: AIR TABLE - TOPPLING STICK

Purpose: Illustrate how a rigid rod topples on a frictionless surface.

## C1-04: CENTER OF MASS - BEAR ON TIGHT ROPE

Purpose: Show stability in system where the center of mass is outside of the object.

## C1-01: CENTER OF MASS MOTION - BARBELL

Purpose: Demonstrate motion of the center of mass of an asymmetric object.

## B2-42: ARM MODEL

Purpose: Model the forces occurring in the arm

## B2-31: EQUILIBRIUM OF TORQUES - WHEELS AND AXLES

Purpose: Demonstrate equilibrium of torques

## B2-23: TORQUE CONDITION FOR EQUILIBRIUM

Purpose: Demonstrate that equilibrium of forces is an insufficient condition for static equilibrium

## B2-22: TORQUE - PHYSICAL DEFINITION

Purpose: Introduce the concept of torque

## B1-14: CENTER OF MASS - BOTTLE

Purpose: Illustrate the center of mass in a surprising way

## C4-34: GALILEO'S EXPERIMENT - MASSES IN FREE FALL

Purpose: Show that the acceleration of bodies in free fall is independent of mass

## C2-25: FUNNEL CART

Purpose: Demonstrate the independence of horizontal and vertical components of motion

## D1-52: FAIRGROUND ROTOR

Purpose: Illustrate the application of rotational forces

## I5-15: ADIABATIC EXPANSION OF CARBON DIOXIDE

Purpose: Illustrate adiabatic cooling by producing dry ice

## C2-21 PROJECTILES DROPPED AND SHOT

Purpose: Demonstrate the independence of horizontal and vertical components of motion

## I5-22 FIRE SYRINGE

Purpose: Demonstrates heating air by compression

## I5-01 MECHANICAL EQUIVALENT OF HEAT - SHOT BAG

Purpose: Demonstrates that heat can be produced from mechanical work

## I4-31 ICE BOMB

Purpose: Demonstrates forces created by freezing water

## I4-15 CONDENSATION OF STEAM - GALLON CAN COLLAPSE

Purpose: Illustrates forces produced by the pressure drop when steam condenses into water

## H1-02 SPEAKER AND CANDLE

Category: H1 Nature of Sound
Purpose: Demontrates longitudinal behavior of sound waves
Page 3 of 5
• #### C8-03: GALILEO'S PENDULUM

Demonstrate conservation of energy in a simple system. Read More
• #### C8-04 HILL TRACK

Demonstrates conservation of energy Read More
• #### C8-05: CONSERVATION OF ENERGY IN VERTICAL PROJECTILE

Show the relation between initial velocity and height of a vertical projectile. Read More
• #### C8-06 PILE DRIVER

Illustrates gravitational potential energy converting into kinetic energy converting into work Read More
• #### C8-11 INTERNAL VS. EXTERNAL ENERGY - SPRING-COUPLED SUPERBALLS

Shows that when energy disappears from the center of mass motion it may be converted into internal energy Read More
• #### C8-12: JUMPING MASSES WITH INTERNAL SPRINGS

Demonstrate conversion of internal energy of a spring into kinetic energy and then gravitational potential energy. Read More
• #### C8-13: BUNGEE JUMPER MODEL

Determine the minimum value of the spring constant of a bungee rope to ensure a safe jump. Read More
• #### C8-14 JUMPING CLAMP

Demonstrates mechanical potential energy transforming into kinetic energy Read More
• #### C8-21: ROCK AND WASTE BASKET

Demonstrate conservation of energy in a humorous way. Read More
• #### C8-22: ENERGY CONVERSION - SUPERBALL AND SOUNDING BOARD

Show transformation of energy from one form to another. Read More
• #### C8-23: WORK DONE BY PUSHING ON WALL

Illustrates that the wall and the floor do no work. Read More