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| Drop a bounce ball and a non-bounce ball. | Drop a bouncy ball and a non-bouncy ball. |
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| '''Setup:''' | '''Setup and Procedure:''' |
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| 1. Make a Setup check list. 1. ... |
1. Set balls in tray to be held until use. 1. Drop the balls simultaneously from some arbitrary height. One ball will bounce (the happy ball) and the other won't (the sad ball). |
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| 1. List any Warnings.... 1. Demonstration may require practice. |
1. Do NOT put in liquid nitrogen! |
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| Insert description of demonstration, how is the demonstration preformed. ||attachment other photos||attachment other photos|| ||attachment other photos||attachment other photos|| |
At the moment just before impact, each ball has its own momentum. Upon collision with the ground, the nature of the momentum transfer will depend on the material from which each ball is made. If the ball allows for an elastic collision (the happy ball), the ball will bounce upward to the same height it was dropped (ideal case). If the ball allows for an inelastic collision, all of the momentum of the ball will be transferred to the ground. This demonstrates the difference between elastic and inelastic collisions. |
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| 1. List any references | * [http://hyperphysics.phy-astr.gsu.edu/hbase/elacol.html Elastic & Inelastic Collisions - Hyperphysics] * [https://en.wikipedia.org/wiki/Collision Collisions - Wikipedia] |
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| [Insert a back link to main topic list] |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
Happy and Sad Balls, 1R40.30
Location:
Cabinet: [:MechanicsCabinet:Mechanic (ME)]
Bay: [:MechanicsCabinetBayA2:(A2)]
Shelf: #2
attachment:HappySadBalls-400.jpg
Description:
Drop a bouncy ball and a non-bouncy ball.
Equipment |
Location |
ID Number |
|
|
|
Happy and Sad Balls |
ME, Bay A2, Shelf #2 |
1R40.30 |
Setup and Procedure:
- Set balls in tray to be held until use.
- Drop the balls simultaneously from some arbitrary height. One ball will bounce (the happy ball) and the other won't (the sad ball).
Cautions, Warnings, or Safety Concerns:
- Do NOT put in liquid nitrogen!
Demonstration:
At the moment just before impact, each ball has its own momentum. Upon collision with the ground, the nature of the momentum transfer will depend on the material from which each ball is made. If the ball allows for an elastic collision (the happy ball), the ball will bounce upward to the same height it was dropped (ideal case). If the ball allows for an inelastic collision, all of the momentum of the ball will be transferred to the ground. This demonstrates the difference between elastic and inelastic collisions.
References:
[http://hyperphysics.phy-astr.gsu.edu/hbase/elacol.html Elastic & Inelastic Collisions - Hyperphysics]
[https://en.wikipedia.org/wiki/Collision Collisions - Wikipedia]
[:Demonstrations:Demonstrations]
[:Instructional:Home]