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Size: 2386
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| Deletions are marked like this. | Additions are marked like this. |
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| A glider on a level air track is pushed giving it a velocity which remains roughly constant on the low-friction surface. A timer together with a known displacement can be used to measure the velocity. | Pull a wood block across a table at constant velocity in front of a meter stick. |
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| Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate. | One could use a with a stopwatch, measure the time it takes to pull a wood block across a table at constant velocity in front of a meter stick. One could pull a wood block across a table and discuss all the force acting on the block. One could discuss vectors, normal force, coefficient of friction too. |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
Block of Wood on a String, 1J30.05
Topic and Concept:
- Motion in One Dimension, [:MotionIn1D#Velocity: 1C10. Velocity]
Location:
Cabinet: [:MechanicsCabinet:Mechanic (ME)]
Bay: [:MechanicsCabinetBayB5:(B5)]
Shelf: #2
attachment:BlockonStringMain-400.jpg
Abstract:
Pull a wood block across a table at constant velocity in front of a meter stick.
Equipment |
Location |
ID Number |
|
|
|
Blocks of Wood on a String |
ME, Bay B5, Shelf #2 |
|
DMM or Multipurpose Timer |
WS, Bay B1, Shelf #2 |
|
Meter Stick |
ME, Bay B1, Shelf #2 |
|
Important Setup Notes:
- N/A
Setup and Procedure:
- Place a meter stick on the lecture bench.
- Place the edge of front of the block at the beginning of the meter stick.
- Hook up the DMM or multipurpose meter in stopwatch mode. Click the respective link for setup/operation information.
- Begin to pull the block with constant force and maintain that force until the leading edge of the block makes it to the end of the meter stick.
- Have someone run the stopwatch beginning timing at the start of motion and ending when the block travels 1 m.
The velocity can be calculated using the equation for velocity: v = (xf-xi)/(tf-ti).
Cautions, Warnings, or Safety Concerns:
- N/A
Discussion:
One could use a with a stopwatch, measure the time it takes to pull a wood block across a table at constant velocity in front of a meter stick. One could pull a wood block across a table and discuss all the force acting on the block. One could discuss vectors, normal force, coefficient of friction too.
attachment:BlockonString02-250.jpg |
attachment:BlockonString04-250.jpg |
attachment:BlockonString05-250.jpg |
attachment:BenchMeter04-250.jpg |
Videos:
[https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel]
References:
- List any references
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