<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE StepCoreXML>
<world xmlns="http://edu.kde.org/step/StepCoreXML" version="1.0" id="1">
    <name>món1</name>
    <color>#ffffffff</color>
    <time>38.4399999999994</time>
    <timeScale>1</timeScale>
    <errorsCalculation>false</errorsCalculation>

    <item class="Spring" id="2">
        <name>molla1</name>
        <color>#ff00ff00</color>
        <restLength>1.2</restLength>
        <stiffness>1</stiffness>
        <damping>0</damping>
        <body1>8</body1>
        <body2>9</body2>
        <localPosition1>(0,0)</localPosition1>
        <localPosition2>(0,0)</localPosition2>
    </item>

    <item class="Note" id="3">
        <name>nota1</name>
        <color>#ff000000</color>
        <position>(0,2.88)</position>
        <size>(200,60)</size>
        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot;&gt;&lt;/meta&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;&lt;p align=&quot;center&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:14pt; font-weight:600;&quot;&gt;Guia d'aprenentatge 1&lt;/span&gt;&lt;/p&gt;&lt;p align=&quot;center&quot; style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:12pt;&quot;&gt;Cossos i molles.&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>

    </item>

    <item class="Note" id="4">
        <name>nota2</name>
        <color>#ff000000</color>
        <position>(-2.2,-0.18)</position>
        <size>(300,258)</size>
        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot;&gt;&lt;/meta&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Posició i velocitat&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Es pot canviar la posició de qualsevol cos senzillament arrossegant-lo.&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Feu clic en un dels discos per a seleccionar-lo. Podreu veure-hi dues fletxes: la blava representa la velocitat i la vermella representa l'acceleració. Podeu arrossegar el quadrat gris petit al final de la fletxa de la velocitat per a canviar-la.&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Doneu una ullada al plafó Propietats de la dreta. Aquí podreu definir numèricament la posició i la velocitat (així com totes les altres propietats) del cos actual.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>

    </item>

    <item class="Note" id="5">
        <name>nota3</name>
        <color>#ff000000</color>
        <position>(-2.2,-2.36)</position>
        <size>(300,182)</size>
        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot;&gt;&lt;/meta&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Propietats&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Doneu una ullada al plafó Propietats de la dreta. Aquí podreu definir numèricament la posició i la velocitat (així com totes les altres propietats) del cos actual.&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Seleccioneu una molla fent-hi clic. Canvieu la seva rigidesa i vegeu com això afecta la simulació.&lt;/p&gt;&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>

    </item>

    <item class="Note" id="6">
        <name>nota4</name>
        <color>#ff000000</color>
        <position>(2.2,1.58)</position>
        <size>(300,200)</size>
        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot;&gt;&lt;/meta&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Missió&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Proveu de canviar el sistema d'alguna manera per a fer que els discos girin al voltant del centre del sistema.&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Ara proveu de canviar les propietats de la molla per tal de fer constant la seva longitud mentre els discos estan girant.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>

    </item>

    <item class="Note" id="7">
        <name>nota5</name>
        <color>#ff000000</color>
        <position>(2.2,-0.46)</position>
        <size>(300,234)</size>
        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot;&gt;&lt;/meta&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Més cossos&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Per tal de crear un cos, feu clic a la seva icona al plafó de la Paleta i seguiu les instruccions que s'indiquen al giny d'informació a la cantonada superior esquerra de l'escena&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Creeu un disc més i dues molles més i connecteu tots els elements al triangle. Ara feu que girin al voltant del centre.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>

    </item>

    <item class="Disk" id="8">
        <name>disc1</name>
        <color>#ff000000</color>
        <position>(0,0.7)</position>
        <angle>0</angle>
        <velocity>(0,0.2326)</velocity>
        <angularVelocity>0</angularVelocity>
        <mass>1</mass>
        <inertia>0.0601</inertia>
        <radius>0.3</radius>
    </item>

    <item class="Disk" id="9">
        <name>disc2</name>
        <color>#ff000000</color>
        <position>(0,-0.7)</position>
        <angle>0</angle>
        <velocity>(0,-0.2326)</velocity>
        <angularVelocity>0</angularVelocity>
        <mass>1</mass>
        <inertia>0.0144</inertia>
        <radius>0.3</radius>
    </item>

    <item class="Note" id="10">
        <name>nota6</name>
        <color>#ff000000</color>
        <position>(-2.2,1.74)</position>
        <size>(300,166)</size>
        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot;&gt;&lt;/meta&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Simulació&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Feu clic al botó «Simula» de la barra d'eines per a iniciar la simulació. Torneu a fer clic en el mateix botó per a aturar-la.&lt;/p&gt;&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;- Després d'aturar la simulació, es pot revertir a l'estat inicial prement el botó Desfés.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>

    </item>

    <solver class="AdaptiveEulerSolver" id="11">
        <name>solucionador1</name>
        <stepSize>1</stepSize>
        <toleranceAbs>0.001</toleranceAbs>
        <toleranceRel>0.001</toleranceRel>
    </solver>

    <collisionSolver class="GJKCollisionSolver" id="12">
        <name>solucionadorCol·lisions1</name>
        <toleranceAbs>0.001</toleranceAbs>
    </collisionSolver>

    <constraintSolver class="CGConstraintSolver" id="13">
        <name>solucionadorRestriccions1</name>
    </constraintSolver>

</world>
