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	<id>https://demosdev.physics.uottawa.ca/w/index.php?action=history&amp;feed=atom&amp;title=Cylindrical_stack_of_discs</id>
	<title>Cylindrical stack of discs - Revision history</title>
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	<updated>2026-04-15T06:11:16Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Cylindrical_stack_of_discs&amp;diff=671&amp;oldid=prev</id>
		<title>Mwong017: /* Images &amp; Movies */</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Cylindrical_stack_of_discs&amp;diff=671&amp;oldid=prev"/>
		<updated>2015-08-28T15:05:12Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Images &amp;amp; Movies&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 15:05, 28 August 2015&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l21&quot; &gt;Line 21:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 21:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;File:1F20.34_1.JPG|Figure1&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;File:1F20.34_1.JPG|Figure1&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;/gallery&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;/gallery&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
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&lt;/table&gt;</summary>
		<author><name>Mwong017</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Cylindrical_stack_of_discs&amp;diff=503&amp;oldid=prev</id>
		<title>Mwong017: Created page with &quot;__NOTOC__ Back to 1F - Newton's First Law&lt;br&gt; PIRA index: 1F20.34  ==Description== A stack of cylindrical discs is placed on a table. Discs from ...&quot;</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Cylindrical_stack_of_discs&amp;diff=503&amp;oldid=prev"/>
		<updated>2015-07-22T14:21:48Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;__NOTOC__ Back to &lt;a href=&quot;/wiki/1F_-_Newton%27s_First_Law&quot; title=&quot;1F - Newton&amp;#039;s First Law&quot;&gt;1F - Newton&amp;#039;s First Law&lt;/a&gt;&amp;lt;br&amp;gt; PIRA index: 1F20.34  ==Description== A stack of cylindrical discs is placed on a table. Discs from ...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1F_-_Newton%27s_First_Law|1F - Newton's First Law]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1F20.34&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A stack of cylindrical discs is placed on a table. Discs from the bottom are removed by hitting them with a ruler. The remaining discs drop down to the table each time without falling over.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*stack of discs&lt;br /&gt;
*solid ruler&lt;br /&gt;
*flat surface&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Set the stack of discs on a flat surface. Swiftly remove the bottom disc by hitting it with the side of the ruler. The stack should drop down without toppling over.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
disc, mass, ruler, tablecloth&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1F20.34_1.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Mwong017</name></author>
		
	</entry>
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