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This page contains procedures for a classroom demonstration that illustrates the concept of inertia. A large wooden crochet hoop is balanced on the lip of a glass soda bottle. A pencil is then balanced atop the hoop. The pencil remains stationary until the demonstrator yanks the hoop in a downward angle. Performed properly, the pencil should drop directly into the soda bottle below. The page contains photos and background information on the physics fundamentals (in this case, Newton's First Law of Motion). Performed incorrectly, the demo still illustrates the effects of a net external force on a stationary object.
Phun Physics is a collection of physics demonstrations which introduce basic physics topics, are approximately 45 minutes long, and can be varied for presentation to grades 3-12. SEE RELATED ITEMS BELOW for a link to the full collection.
This resource is part of a Physics Front Topical Unit.
Topic: Dynamics: Forces and Motion
Unit Title: Newton's First Law & Inertia A great companion to the "Dollar Bill Grab" above. This demo illustrates the same basic concept (Law of Inertia). If done correctly, it looks like a magic trick. Even if done incorrectly, it still demonstrates the idea of inertia at rest. Could be a good springboard for cooperative learning groups to discuss the meaning of net force, and what happens when net force is zero. Link to Unit:
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Record Link
<a href="http://www.thephysicsfront.org/items/detail.cfm?ID=8427">Phun Physics. Phun Physics: Pencil Drop. January 20, 2008.</a>
AIP Format
Phun Physics, Phun Physics: Pencil Drop (1999), WWW Document, (http://phun.physics.virginia.edu/demos/pencil_drop.html).
AJP/PRST-PER
Phun Physics, Phun Physics: Pencil Drop (1999), <http://phun.physics.virginia.edu/demos/pencil_drop.html>.
APA Format
Phun Physics. (2008, January 20). Phun Physics: Pencil Drop. Retrieved June 19, 2013, from http://phun.physics.virginia.edu/demos/pencil_drop.html
Chicago Format
Phun Physics. Phun Physics: Pencil Drop. January 20, 2008. http://phun.physics.virginia.edu/demos/pencil_drop.html (accessed 19 June 2013).
MLA Format
Phun Physics. Phun Physics: Pencil Drop. 1999. 20 Jan. 2008. 19 June 2013 <http://phun.physics.virginia.edu/demos/pencil_drop.html>.
BibTeX Export Format
@misc{
Author = "Phun Physics",
Title = {Phun Physics: Pencil Drop},
Volume = {2013},
Number = {19 June 2013},
Month = {January 20, 2008},
Year = {1999}
}
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%Q Phun Physics
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%0 Electronic Source Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The AIP Style presented is based on information from the AIP Style Manual. The APA Style presented is based on information from APA Style.org: Electronic References. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. This resource is stored in 6 shared folders. You must login to access shared folders. Phun Physics: Pencil Drop:
Is Part Of
Phun Physics
this is the full collection of Phun Physics demonstrations for elementary and secondary science classrooms. Procedures and background information are available for each demo. relation by Caroline Hall
Covers the Same Topic As
Phun Physics: Dollar Bill Grab
This is a demonstration by the same authors that also illustrates the principle of Newton's Law of Inertia. It can be modified for use in either an elementary or secondary science classroom. relation by Caroline HallKnow of another related resource? Login to relate this resource to it. |
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