PIRA #

Demonstration Name

Abstract

1M10.10

shelf and block Lift a block up and set it on a shelf.

1M10.15

block on table

1M10.16

carry a block

Just carry a block around.

1M10.20

pile driver

Drive a nail into a block of wood with a model pile driver.

1M10.20

pile driver

A model pile driver pounds a nail into wood.

1M10.20

pile driver

A 10 lb block guided by side rails falls onto a nail in wood.

1M10.20

pile driver

Drive a nail into a block of wood with a model pile driver.

1M10.20

pile driver

Drop a weight onto a nail in wood.

1M10.25

pile driver with soda cans

Smash pop cans with a pile driver.

1M10.99

work to remove tape

Pull off a piece of tape stuck to the lecture bench.

PIRA #

Demonstration Name

Abstract

1M20.01

simple machines

A collection of simple machines is shown.

1M20.10

pulleys

An assortment of large pulleys can be rigged several ways.

1M20.10

pulleys

Demonstrate what you have.

1M20.11

pulley advantage

Place a mass on a string over a pulley and hold a spring scale at the other side. Repeat with a mass hanging from a single pulley in a loop of string.

1M20.11

pulley advantage

Hang a 10 newton weight on a string passing over a pulley and measure the force with a spring scale, then hang the weight from a free running pulley.

1M20.13

pulleys

Pedagogy. Good diagram.

1M20.15

pulley and scales

Same as encyclopedia disc 04-05.

1M20.15

pulley and scales

This is a counter intuitive demonstration. A frame containing a spring scale and pulley hangs from another spring scale. Look it up.

1M20.20

bosun's chair

Use a single pulley to help the instructor go up.

1M20.20

bosun's chair

Using a block and tackle, the lecturer ascends. Full of pedagogical hints on how to do this effectively.

1M20.20

bosun's chair

The instructor "lifts himself up by the bootstraps".

1M20.25

monkey and bananas

A wind up device and equal mass are placed at either ends of a string placed over a pulley.

1M20.25

monkey and bananas

A yo-yo and counterweight are suspended over a pulley. The counterweight and yo-yo rise and fall together.

1M20.25

monkey and the coconut

A steel yo-yo and steel counterweight suspended over two low friction bearings.

1M20.25

climbing monkey

A yo-yo and a counterweight are on opposite sides on a pulley. As the yo-yo goes up and down, so does the counterweight.

1M20.25

climbing monkey

A steel yo-yo on one side of a pulley and a counterweight on the other. As the yo-yo goes up and down, so does the counterweight.

1M20.26

climbing monkey

Two equal masses are hung over a pulley, one of which is equipped with a cord winding mechanism.

1M20.27

windlass

A model windlass is described.

1M20.28

climbing pirate

String is wrapped around two different sized pulleys on a common axis.

1M20.29

fool's tackle

A diagram of the "fools tackle" is shown.

1M20.30

incline plane

1M20.30

screw and wedge

A long triangular piece of sailcloth is wound around a mailing tube to show the relationship between a screw and a wedge. Diagram.

1M20.35

big screw as incline plane

1M20.35

big screw

A large wood screw and nut (6"-1) show the relationship between a screw and incline.

1M20.40

levers

1M20.40

levers

Show the three classes of levers with a mass, bar, pivot, and spring scale.

1M20.40

levers

The three classes of simple levers.

1M20.40

levers

A torque bar, spring scale, and pivot are used to illustrate the three classes of levers.

1M20.45

body levers

Construction and use of a device representing body levers.

1M20.60

wheel and axle

The PIC-Kit used for demonstrating simple machines.

1M20.99

black box

Hide a mechanism in a box and try to deduce what is inside.

PIRA #

Demonstration Name

Abstract

PIRA #

Demonstration Name

Abstract