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| Work and Energy, [:WorkEnergy#ConservationOfEnergy: 1M40. Conservation of Energy] | Work and Energy, [[WorkEnergy#ConservationOfEnergy| 1M40. Conservation of Energy]] |
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| * '''Cabinet:''' [:MechanicsCabinet:Mechanic (ME)] * '''Bay:''' [:MechanicsCabinetBayA12:(A12)] |
* '''Cabinet:''' [[MechanicsCabinet|Mechanic (ME)]] * '''Bay:''' [[MechanicsCabinetBayA12|(A12)]] |
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| ||Yo-yos||[:MechanicsCabinetBayA12: ME, Bay A12, Shelf #2]|| || | ||Yo-yos||[[MechanicsCabinetBayA12| ME, Bay A12, Shelf #2]]|| || |
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| * [https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel] | * [[https://www.youtube.com/user/LectureDemostrations/videos?view=1|Lecture Demonstration's Youtube Channel]] |
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| * [https://en.wikipedia.org/wiki/Energy Wikipedia - Energy] * [https://en.wikipedia.org/wiki/Kinetic_energy#Rotating_bodies Wikipedia - Rotational Kinetic Energy] |
* [[https://en.wikipedia.org/wiki/Energy|Wikipedia - Energy]] * [[https://en.wikipedia.org/wiki/Kinetic_energy#Rotating_bodies|Wikipedia - Rotational Kinetic Energy]] |
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| [:Instructional:Home] | [[Instructional|Home]] |
Maxwell's Yo-Yo, 1M40.50
Topic and Concept:
Work and Energy, 1M40. Conservation of Energy
Location:
Cabinet: Mechanic (ME)
Bay: (A12)
Shelf: #2
Abstract:
A large disc is suspended from a small axle so the string unwinds on the way down and rewinds on the way up showing that rotational energy is conserved.
Equipment |
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Yo-yos |
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Important Setup Notes:
- N/A
Setup and Procedure:
- Choose a yo-yo.
- Wind up the attached string around the small axle wedged between the two larger, outer discs.
- Put your index finger through the loop at the end of the string while holding the yo-yo in the opposite hand.
- When ready, keeping your hand with the looped over finger in place, let the yo-yo drop. As it drops, it will pick up rotational speed until all the string unwinds. Upon hitting this point, it will wind up again approaching your hand.
- If desired, repeat with other yo-yos.
Cautions, Warnings, or Safety Concerns:
- N/A
Discussion:
Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.
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Videos:
References: