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 [:PiraScheme#Mechanics: Table of Mechanics] [:Gravity: Mechanics (1L): Gravity] [:Linear_Momentum: Mechanics (1N): Linear Momentum] [:Demonstrations:Lecture Demonstrations]

## Work and Energy

PIRA classification 1M

?? Demonstrations listed of which ?? are grayed out

 Grayed out demonstrations are not available or within our archive and are under consideration to be added.

# 1M10. Work

 PIRA # Demonstration Name Abstract 1M10.10 Shelf and Block Lift a block up and set it on a shelf. (Work) 1M10.16 Carry a Block Just carry a block around.(No Work) 1M10.20 Pile Driver Drive a nail into a block of wood with a model pile driver. 1M10.21 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.

# 1M20. Simple Machines

 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. 1M20.11 Mechanical Advantage of Pulleys Hang a 10N weight on a string passing over a pulley and measure the force with a spring scale, then hang the weight from a pulley that is free to move up and down. 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<#dddddd> Bosun's Chair Using a block and tackle, the lecturer ascends. Full of pedagogical hints on how to do this effectively. 1M20.25 Monkey and Bananas A yo-yo and counterweight are suspended over a pulley. The counterweight and yo-yo rise and fall. 1M20.27 Windlass A model windlass is described. 1M20.28 Climbing Pirate String is wrapped around two different sized pulleys on a common axis. 1M20.35 Big Screw A large wood screw and nut show the relationship between a screw and incline. 1M20.40 Levers A torque bar, spring scale, and pivot are used to illustrate the three classes of levers. 1M20.60 Wheel and Axle The PIC-Kit used for demonstrating simple machines.
• 1M20.11 [:BlockNTackle: Block and Tackle Pulley Systems and Pulley Advantage]

# 1M30. Non-Conservative Forces

 PIRA # Demonstration Name Abstract 1M30.10 Air Track Collisions / Sliding Masses Compare the bounce of an air cart on an inclined air track with a mass that is attached tightly and loosely. 1M30.15 Negative Acceleration Due to Friction A pendulum hits a tabletop, transferring a wood block rider to the tabletop. Potential to kinetic energy is depleted due to friction. 1M30.30 The Woodpecker A toy bird slides down a rod giving up energy to friction and pecking. A "loose clamp" on the ring stand demo is also shown.