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	<description>...mi fai un esempio di fisica?</description>
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		<title>disphy</title>
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		<item>
		<title>Quesito, Fisica 1, 17 Maggio 2009</title>
		<link>http://disphy.wordpress.com/2009/05/17/quesito-fisica-1-17-maggio-2009/</link>
		<comments>http://disphy.wordpress.com/2009/05/17/quesito-fisica-1-17-maggio-2009/#comments</comments>
		<pubDate>Sun, 17 May 2009 13:02:34 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 1 (Aprile - Giugno 2009)]]></category>
		<category><![CDATA[Fisica@Uninettuno]]></category>
		<category><![CDATA[corpo rigido]]></category>
		<category><![CDATA[dinamica]]></category>

		<guid isPermaLink="false">http://disphy.wordpress.com/?p=97</guid>
		<description><![CDATA[Un albero di altezza h viene segato in corrispondenza della sua base, e cade ruotando intorno alla sua base inferiore. Con che velocità tocca il suolo la sua sommità?<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=97&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Un albero di altezza h viene segato in corrispondenza della sua base, e cade ruotando intorno alla sua base inferiore. Con che velocità tocca il suolo la sua sommità?</p>
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		<title>Fisica 1, Quesito 1, 2008/2009</title>
		<link>http://disphy.wordpress.com/2009/04/27/fisica-1-quesito-1-20082009/</link>
		<comments>http://disphy.wordpress.com/2009/04/27/fisica-1-quesito-1-20082009/#comments</comments>
		<pubDate>Mon, 27 Apr 2009 07:43:28 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 1 (Aprile - Giugno 2009)]]></category>
		<category><![CDATA[Fisica@Uninettuno]]></category>
		<category><![CDATA[dinamica]]></category>
		<category><![CDATA[fisica 1]]></category>
		<category><![CDATA[proiettili]]></category>

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		<description><![CDATA[ Un bersaglio (vedere figura) si trova a distanza l dal suolo e un carrello in moto a velocita&#8217; costante v si avvicina al punto O. Quando questo si trova in P, un cannoncino spara, con un&#8217;inclinazione e il proiettile colpisce il bersaglio nel punto piu&#8217; alto della traiettoria. Calcolare le componenti della velocità rispetto al suolo e l&#8217;angolo .<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=89&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><img class="alignnone size-full wp-image-88" title="img" src="http://disphy.files.wordpress.com/2009/04/img.jpg?w=460&#038;h=373" alt="img" width="460" height="373" /></p>
<p> Un bersaglio (vedere figura) si trova a distanza <em>l</em> dal suolo e un carrello in moto a velocita&#8217; costante <strong>v</strong> si avvicina al punto <em>O</em>. Quando questo si trova in <em>P</em>, un cannoncino spara, con un&#8217;inclinazione <img src='http://s0.wp.com/latex.php?latex=%5Calpha&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;alpha' title='&#92;alpha' class='latex' /> e il proiettile colpisce il bersaglio nel punto piu&#8217; alto della traiettoria. Calcolare le componenti della velocità rispetto al suolo e l&#8217;angolo <img src='http://s0.wp.com/latex.php?latex=%5Calpha&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92;alpha' title='&#92;alpha' class='latex' />.</p>
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			<media:title type="html">mlr</media:title>
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		<item>
		<title>Quesito 3, Fisica 1</title>
		<link>http://disphy.wordpress.com/2008/12/10/quesito-3-fisica-1-2/</link>
		<comments>http://disphy.wordpress.com/2008/12/10/quesito-3-fisica-1-2/#comments</comments>
		<pubDate>Wed, 10 Dec 2008 13:59:14 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 1 (Novembre - Dicembre 2008)]]></category>
		<category><![CDATA[quesito]]></category>
		<category><![CDATA[termodinamica]]></category>

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		<description><![CDATA[Due moli di un gas perfetto biatomico seguono una trasformazione termodinamica descritta dalla legge , con costante. Alla fine della trasformazione il gas raddoppia il suo volume. La temperatura iniziale e&#8217; di . Quale lavoro compie il gas durante la trasformazione?<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=82&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Due moli di un gas perfetto biatomico seguono una trasformazione termodinamica descritta dalla legge <img src='http://s0.wp.com/latex.php?latex=p%3DkV&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='p=kV' title='p=kV' class='latex' />, con <img src='http://s0.wp.com/latex.php?latex=k&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='k' title='k' class='latex' /> costante. Alla fine della trasformazione il gas raddoppia il suo volume. La temperatura iniziale e&#8217; di <img src='http://s0.wp.com/latex.php?latex=300+%5C+K&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='300 &#92; K' title='300 &#92; K' class='latex' />. Quale lavoro compie il gas durante la trasformazione?</p>
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			<media:title type="html">mlr</media:title>
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	</item>
		<item>
		<title>Quesito 2, Fisica 2</title>
		<link>http://disphy.wordpress.com/2008/11/28/quesito-2-fisica-2-3/</link>
		<comments>http://disphy.wordpress.com/2008/11/28/quesito-2-fisica-2-3/#comments</comments>
		<pubDate>Fri, 28 Nov 2008 09:06:51 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 2 (Novembre - Dicembre 2008)]]></category>
		<category><![CDATA[correnti]]></category>
		<category><![CDATA[induzione]]></category>

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		<description><![CDATA[  Una spira di forma quadrata di lato a ha una resistenza R. Nel piano della  spira, e’ posto un conduttore rettilineo indeﬁnito, parallelamente ai due lati della spira ed esternamente ad essa, ad una distanza d dal lato piu’ vicino (vedere ﬁgura). Sapendo che nel conduttore passa una corrente che aumenta costantemente nel tempo della quantita’ [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=78&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p> </p>
<p>Una spira di forma quadrata di lato<span> </span>a<span> </span>ha una resistenza<span> </span>R. Nel piano della<span>  spira, e’ posto un conduttore rettilineo indeﬁnito, parallelamente ai due lati della spi<span>ra ed esternamente ad essa, ad una distanza<span> </span>d<span> </span>dal lato piu’ vicino (vedere ﬁgura).<span> Sapendo che nel conduttore passa una corrente che aumenta costantemente nel tem<span>po della quantita’<span> </span>b, determinare il valore della corrente indotta nella spira, oltreché</span></span></span></span></p>
<div id="attachment_80" class="wp-caption alignleft" style="width: 439px"><a href="http://disphy.files.wordpress.com/2008/11/img2.jpg"><img class="size-full wp-image-80" title="img2" src="http://disphy.files.wordpress.com/2008/11/img2.jpg?w=429&#038;h=313" alt="Quesito 2, Fisica 2" width="429" height="313" /></a><p class="wp-caption-text">Quesito 2, Fisica 2</p></div>
<p><span> direzione verso ed intensita’ delle forze agenti su quest’ultima.</span></p>
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			<media:title type="html">mlr</media:title>
		</media:content>

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			<media:title type="html">img2</media:title>
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		<item>
		<title>Esame di Dicembre</title>
		<link>http://disphy.wordpress.com/2008/11/28/esame-di-dicembre/</link>
		<comments>http://disphy.wordpress.com/2008/11/28/esame-di-dicembre/#comments</comments>
		<pubDate>Fri, 28 Nov 2008 09:00:43 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Uncategorized]]></category>

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		<description><![CDATA[L&#8217;esame di dicembre, per i corsi di Fisica Generale, Fisica 1 e Fisica 2, si svolgerà il giorno 18 dicembre, presso la sede di Uninettuno.<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=76&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>L&#8217;esame di dicembre, per i corsi di Fisica Generale, Fisica 1 e Fisica 2, si svolgerà il giorno 18 dicembre, presso la sede di <a href="http://www.uninettunouniversity.net" target="_blank">Uninettuno.</a></p>
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		<title>Quesito 2, Fisica 1</title>
		<link>http://disphy.wordpress.com/2008/11/28/quesito-2-fisica-1-3/</link>
		<comments>http://disphy.wordpress.com/2008/11/28/quesito-2-fisica-1-3/#comments</comments>
		<pubDate>Fri, 28 Nov 2008 08:56:43 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 1 (Novembre - Dicembre 2008)]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[dinamica]]></category>
		<category><![CDATA[energia]]></category>
		<category><![CDATA[forza peso]]></category>

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		<description><![CDATA[  Una pallina di massa  è legata ad una corda di lunghezza , che può ruotare liberamente intorno al punto O, in un piano verticale. La pallina è lasciata libera di muoversi, con velocità nulla, nel punto P.     1. Quanto vale la tensione delle corda nel punto Q?   2. Sia il modulo della [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=71&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p> </p>
<div id="attachment_72" class="wp-caption alignleft" style="width: 470px"><a href="http://disphy.files.wordpress.com/2008/11/img.jpg"><img class="size-full wp-image-72" title="img" src="http://disphy.files.wordpress.com/2008/11/img.jpg?w=460&#038;h=346" alt="Quesito 2, Fisica 1" width="460" height="346" /></a><p class="wp-caption-text">Quesito 2, Fisica 1</p></div>
<p>Una pallina di massa <img src='http://s0.wp.com/latex.php?latex=m&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='m' title='m' class='latex' />  è legata ad una corda di lunghezza <img src='http://s0.wp.com/latex.php?latex=l&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='l' title='l' class='latex' />, che può ruotare liberamente intorno al punto O, in un piano verticale. La pallina è lasciata libera di muoversi, con velocità nulla, nel punto P.  </p>
<p> </p>
<p>1. Quanto vale la tensione delle corda nel punto Q?</p>
<p> </p>
<p>2. Sia <img src='http://s0.wp.com/latex.php?latex=v&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='v' title='v' class='latex' /> il modulo della velocità della pallina in Q. Se la lunghezza della corda  raddoppiasse, il modulo della velocità della pallina, nel punto più basso della (nuova) traiettoria sarebbe maggiore, minore o uguale a <img src='http://s0.wp.com/latex.php?latex=v&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='v' title='v' class='latex' />?</p>
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			<media:title type="html">mlr</media:title>
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		<title>Fisica 2, Quesito 1</title>
		<link>http://disphy.wordpress.com/2008/11/19/fisica-2-quesito-1/</link>
		<comments>http://disphy.wordpress.com/2008/11/19/fisica-2-quesito-1/#comments</comments>
		<pubDate>Wed, 19 Nov 2008 14:50:26 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 2 (Giugno-Luglio 2008)]]></category>
		<category><![CDATA[campo elettrostatico]]></category>
		<category><![CDATA[conduttori]]></category>
		<category><![CDATA[moto di cariche]]></category>

		<guid isPermaLink="false">http://disphy.wordpress.com/?p=67</guid>
		<description><![CDATA[Un generatore di Van de Graaf può essere schematizzato come una sfera conduttrice; sia la carica della sfera,  e sia metri il suo raggio. Si supponga che la carica sia distribuita uniformemente. Calcolare il campo elettrico in un punto arbitrario esterno alla sfera e darne la sua espressione analitica; calcolare il modulo che il campo [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=67&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Un generatore di Van de Graaf può essere schematizzato come una sfera conduttrice; sia <img src='http://s0.wp.com/latex.php?latex=Q%3D10%5E%7B-4%7D+%5C+C&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='Q=10^{-4} &#92; C' title='Q=10^{-4} &#92; C' class='latex' /> la carica della sfera,  e sia <img src='http://s0.wp.com/latex.php?latex=R%3D2&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='R=2' title='R=2' class='latex' /> metri il suo raggio. Si supponga che la carica sia distribuita uniformemente. Calcolare il campo elettrico in un punto arbitrario esterno alla sfera e darne la sua espressione analitica; calcolare il modulo che il campo assume a distanza 10 metri dal centro della sfera. Supponiamo di porre a tale distanza (10 metri) un elettrone, praticamente in quieta: con quale forza esso è attratto dalla sfera? Con che velocità giunge sulla sua superficie?</p>
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		<title>Quesito 1, Fisica 1</title>
		<link>http://disphy.wordpress.com/2008/11/19/quesito-1-fisica-1-3/</link>
		<comments>http://disphy.wordpress.com/2008/11/19/quesito-1-fisica-1-3/#comments</comments>
		<pubDate>Wed, 19 Nov 2008 14:34:54 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 1 (Giugno-Luglio 2008)]]></category>
		<category><![CDATA[cinematica]]></category>
		<category><![CDATA[fisica 1]]></category>
		<category><![CDATA[legge oraria]]></category>
		<category><![CDATA[moto dei gravi]]></category>
		<category><![CDATA[quesito]]></category>
		<category><![CDATA[traiettoria]]></category>

		<guid isPermaLink="false">http://disphy.wordpress.com/?p=62</guid>
		<description><![CDATA[1. Un punto materiale si muove secondo la legge oraria:      , con costanti aventi le dimensioni opportune. Calcolare le componenti del vettore velocita&#8217; ed accelerazione ad un istante generico; calcolare l&#8217;angolo fra le componenti del vettore accelerazione all&#8217;istante t=0. Descrivere poi la traiettoria del punto materiale nel caso in cui a=0.     [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=62&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>1. Un punto materiale si muove secondo la legge oraria:</p>
<p><img src='http://s0.wp.com/latex.php?latex=x%28t%29%3Dat%5E3%2Bbt%5E2&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='x(t)=at^3+bt^2' title='x(t)=at^3+bt^2' class='latex' />      <img src='http://s0.wp.com/latex.php?latex=%5C+%5C+%5C+y%28t%29%3Dct%5E4%2Bd&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='&#92; &#92; &#92; y(t)=ct^4+d' title='&#92; &#92; &#92; y(t)=ct^4+d' class='latex' />, con <img src='http://s0.wp.com/latex.php?latex=a%2Cb%2Cc%2Cd&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='a,b,c,d' title='a,b,c,d' class='latex' /> costanti aventi le dimensioni opportune. Calcolare le componenti del vettore velocita&#8217; ed accelerazione ad un istante generico; calcolare l&#8217;angolo fra le componenti del vettore accelerazione all&#8217;istante t=0. Descrivere poi la traiettoria del punto materiale nel caso in cui a=0.</p>
<p> </p>
<p> </p>
<p>1.b Un punto materiale <img src='http://s0.wp.com/latex.php?latex=P_1&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='P_1' title='P_1' class='latex' /> viene lasciato cadere dall&#8217;alto, da una altezza <img src='http://s0.wp.com/latex.php?latex=h_1&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='h_1' title='h_1' class='latex' />; nello stesso istante, sulla verticale passante per <img src='http://s0.wp.com/latex.php?latex=P_1&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='P_1' title='P_1' class='latex' />, viene lanciato verso l&#8217;alto un altro punto materiale <img src='http://s0.wp.com/latex.php?latex=P_2&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='P_2' title='P_2' class='latex' /> con velocità <img src='http://s0.wp.com/latex.php?latex=v&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='v' title='v' class='latex' />. Calcolare il valore minimo di <img src='http://s0.wp.com/latex.php?latex=v&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='v' title='v' class='latex' /> necessario perché i due punti si scontrino prima di cadere al suolo (ovvero mentre sono entrambi in volo).</p>
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		<title>Quesito 3, Fisica 2</title>
		<link>http://disphy.wordpress.com/2008/09/28/quesito-3-fisica-2-2/</link>
		<comments>http://disphy.wordpress.com/2008/09/28/quesito-3-fisica-2-2/#comments</comments>
		<pubDate>Sun, 28 Sep 2008 09:15:32 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 2 (Settembre - Ottobre 2008)]]></category>
		<category><![CDATA[Fisica@Uninettuno]]></category>
		<category><![CDATA[campi elettromagnetici dipendenti dal tempo]]></category>
		<category><![CDATA[fisica 2]]></category>
		<category><![CDATA[induzione]]></category>
		<category><![CDATA[quesito]]></category>

		<guid isPermaLink="false">http://disphy.wordpress.com/?p=58</guid>
		<description><![CDATA[Due solenoidi di uguale lunghezza e diametro rispettivamente e , piccoli rispetto alla lunghezza del solenoide, sono disposti coassialmente l&#8217;uno dentro l&#8217;altro . Il numero di spire per unita&#8217; di lunghezza e&#8217;, rispettivamente, e . Calcolare il coefficiente di autoinduzione del sistema, quando i solenoidi sono collegati in modo che la corrente percorra i due [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=58&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Due solenoidi di uguale lunghezza <img src='http://s0.wp.com/latex.php?latex=l&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='l' title='l' class='latex' /> e diametro rispettivamente <img src='http://s0.wp.com/latex.php?latex=d_1&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='d_1' title='d_1' class='latex' /> e <img src='http://s0.wp.com/latex.php?latex=d_2&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='d_2' title='d_2' class='latex' />, piccoli rispetto alla lunghezza <img src='http://s0.wp.com/latex.php?latex=l&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='l' title='l' class='latex' /> del solenoide, sono disposti coassialmente l&#8217;uno dentro l&#8217;altro <img src='http://s0.wp.com/latex.php?latex=d_2%3Ed_2&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='d_2&gt;d_2' title='d_2&gt;d_2' class='latex' />. Il numero di spire per unita&#8217; di lunghezza e&#8217;, rispettivamente, <img src='http://s0.wp.com/latex.php?latex=n_1&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='n_1' title='n_1' class='latex' /> e <img src='http://s0.wp.com/latex.php?latex=n_2&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='n_2' title='n_2' class='latex' />. Calcolare il coefficiente di autoinduzione del sistema, quando i solenoidi sono collegati in modo che la corrente <img src='http://s0.wp.com/latex.php?latex=i&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='i' title='i' class='latex' /> percorra i due avvolgimenti in senso opposto.</p>
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		<title>Quesito 3, Fisica 1</title>
		<link>http://disphy.wordpress.com/2008/09/28/quesito-3-fisica-1/</link>
		<comments>http://disphy.wordpress.com/2008/09/28/quesito-3-fisica-1/#comments</comments>
		<pubDate>Sun, 28 Sep 2008 09:01:34 +0000</pubDate>
		<dc:creator>mlr</dc:creator>
				<category><![CDATA[Fisica 1 (Settembre - Ottobre 2008)]]></category>
		<category><![CDATA[Fisica@Uninettuno]]></category>
		<category><![CDATA[dinamica]]></category>
		<category><![CDATA[fisica 1]]></category>
		<category><![CDATA[quesito]]></category>

		<guid isPermaLink="false">http://disphy.wordpress.com/?p=53</guid>
		<description><![CDATA[Si consideri un disco omogeneo di massa M e raggio R, girevole senza attrito attorno a un asse passante per il suo centro di massa O. Attorno al disco si avvolge &#8211; senza strisciare &#8211; un filo flessibile e inestendibile, di massa trascurabile, che reca a un&#8217;estremità un pesino A di massa e all&#8217;altra estremità [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=disphy.wordpress.com&amp;blog=3864782&amp;post=53&amp;subd=disphy&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Si consideri un disco omogeneo di massa M e raggio R, girevole senza attrito attorno a un asse passante per il suo centro di massa O. Attorno al disco si avvolge &#8211; senza strisciare &#8211; un filo flessibile e inestendibile, di massa trascurabile, che reca a un&#8217;estremità un pesino A di massa <img src='http://s0.wp.com/latex.php?latex=m_%7BA%7D&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='m_{A}' title='m_{A}' class='latex' /> e all&#8217;altra estremità un pesino B di massa <img src='http://s0.wp.com/latex.php?latex=m_%7BB%7D%3Em_%7BA%7D.&amp;bg=ffffff&amp;fg=000000&amp;s=0' alt='m_{B}&gt;m_{A}.' title='m_{B}&gt;m_{A}.' class='latex' /> All&#8217;istante iniziale i due pesini si trovano alla stessa quota h rispetto al suolo, con velocità nulla. Non appena si rimuove il vincolo che li tiene fermi, per effetto della gravità il pesino B si abbassa, il disco ruota e il pesino A si innalza. Trascurando la resistenza dell&#8217;aria e tutte le possibili</p>
<div id="attachment_54" class="wp-caption alignleft" style="width: 310px"><a href="http://disphy.files.wordpress.com/2008/09/figcarr.jpg"><img class="size-medium wp-image-54 " title="figcarr" src="http://disphy.files.wordpress.com/2008/09/figcarr.jpg?w=300&#038;h=224" alt="Quesito 3, Fisica 1" width="300" height="224" /></a><p class="wp-caption-text">Quesito 3, Fisica 1</p></div>
<p>cause di dissipazione, calcolare la velocità con cui il pesino B tocca il suolo.</p>
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