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	<id>https://demosdev.physics.uottawa.ca/w/index.php?action=history&amp;feed=atom&amp;title=Ping-pong_ball_on_spinning_platform</id>
	<title>Ping-pong ball on spinning platform - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://demosdev.physics.uottawa.ca/w/index.php?action=history&amp;feed=atom&amp;title=Ping-pong_ball_on_spinning_platform"/>
	<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Ping-pong_ball_on_spinning_platform&amp;action=history"/>
	<updated>2026-04-15T06:13:37Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.34.1</generator>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Ping-pong_ball_on_spinning_platform&amp;diff=649&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=Ping-pong_ball_on_spinning_platform&amp;diff=649&amp;oldid=prev"/>
		<updated>2015-08-28T14:38:51Z</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;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&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 14:38, 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:3A40.10_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:3A40.10_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;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{#widget:YouTube|id=6FPzCk-jydI}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Mwong017</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Ping-pong_ball_on_spinning_platform&amp;diff=648&amp;oldid=prev</id>
		<title>Mwong017: /* Keywords */</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Ping-pong_ball_on_spinning_platform&amp;diff=648&amp;oldid=prev"/>
		<updated>2015-08-28T14:37:45Z</updated>

		<summary type="html">&lt;p&gt;&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Keywords&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&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 14:37, 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-l15&quot; &gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&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;/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;/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;==Keywords==&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;==Keywords==&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;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;simple harmonic motion, ping pong ball, oscillation, shadow&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;simple harmonic motion, ping pong ball, oscillation, shadow&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, spinning, rotating&lt;/ins&gt;&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;/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;/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;==Images &amp;amp; Movies==&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;==Images &amp;amp; Movies==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Mwong017</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Ping-pong_ball_on_spinning_platform&amp;diff=598&amp;oldid=prev</id>
		<title>Mwong017: Created page with &quot;__NOTOC__  Back to 3A - Oscillations&lt;br&gt; PIRA index: 3A40.10  ==Description== A ping-pong ball attached to the edge of a spinning platform traces out a c...&quot;</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Ping-pong_ball_on_spinning_platform&amp;diff=598&amp;oldid=prev"/>
		<updated>2015-07-29T17:52:47Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;__NOTOC__  Back to &lt;a href=&quot;/wiki/3A_-_Oscillations&quot; title=&quot;3A - Oscillations&quot;&gt;3A - Oscillations&lt;/a&gt;&amp;lt;br&amp;gt; PIRA index: 3A40.10  ==Description== A ping-pong ball attached to the edge of a spinning platform traces out a c...&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;
&lt;br /&gt;
Back to [[3A_-_Oscillations|3A - Oscillations]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 3A40.10&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A ping-pong ball attached to the edge of a spinning platform traces out a circle when viewed from the side. When its shadow is viewed from the front, the ball appears to oscillate in simple harmonic motion.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*rotating platform with ping-pong ball&lt;br /&gt;
*overhead projector&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Place the spinning platform on the overhead projector. The class should be able to see the circular motion from the apparatus itself but see the simple harmonic motion from the overhead projector.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
simple harmonic motion, ping pong ball, oscillation, shadow&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:3A40.10_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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