# 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
Page 2 of 5
• #### C2-01 AIR TRACK - CONSTANT VELOCITY AND UNIFORM ACCELERATION

Demonstrate constant velocity and uniform acceleration with minimal friction Read More
• #### C2-02: AIR TRACK - DIRECT MEASUREMENT OF ACCELERATION

Measure acceleration using two different procedures. Read More
• #### C2-03: AIR TRACK - UNIFORM ACCELERATION - INCLINED

Measure acceleration along an inclined air track. Read More
• #### C2-04: FREE FALL WITH PHOTOCELL GATES

Measure acceleration due to gravity Read More
• #### C2-06 BALL DROP ON ROPE - EQUAL AND UNEQUAL INTERVALS

Illustrate the geometrical effect of free fall Read More
• #### C2-09: FREE FALL WITH STROBE

Show the position of a dropped ball at a series of equal time intervals Read More
• #### C2-10: CONSTANT VELOCITY - GALILEO'S EXPERIMENT

Show constant velocity and uniform acceleration using a rolling body. Read More

• #### C2-21 PROJECTILES DROPPED AND SHOT

Demonstrate the independence of horizontal and vertical components of motion Read More
• #### C2-22 MONKEY AND HUNTER

Demonstrate the independence of horizontal and vertical components of motion Read More
• #### C2-23: TRAJECTORY OF A BALL - MODEL

Illustrate the position of a projectile at equal time intervals Read More
• #### C2-24: WATER DROP PARABOLA

Demonstrate the parabolic path of a projectile. Read More
• #### C2-25: FUNNEL CART

Demonstrate the independence of horizontal and vertical components of motion Read More
• #### C2-26 FUNNEL CART WITH MASS OVER PULLEY

Demonstrate the independence of horizontal and vertical components of motion Read More
• #### C2-27 FUNNEL CART ON INCLINE

Demonstrate the independence of horizontal and vertical components of motion Read More
• #### C2-28: TRAJECTORY OF BALL DROPPED BY WALKER

Demonstrate the independence of horizontal and vertical components of motion Read More