<snapdata remixID="8842435"><project name="Marcel Relaford friction sim." app="Snap! 5.1, http://snap.berkeley.edu" version="1"><notes>This simulation attmepts to visually represent the effects frction has on an object that is accelerating due to a force.</notes><thumbnail>data:image/png;base64,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</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" volume="100" pan="0" lines="flat" ternary="false" codify="false" inheritance="true" sublistIDs="false" scheduled="false" 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id="2"><item><costume name="XY Grid" center-x="240" center-y="180" 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" id="3"/></item></list></costumes><sounds><list struct="atomic" id="4"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Object" idx="2" x="0" y="0" heading="90" scale="0.5" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="80,80,80,1" pen="tip" id="9"><costumes><list id="10"><item><costume name="Untitled" center-x="55.5" center-y="53" image="data:image/png;base64,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" id="11"/></item></list></costumes><sounds><list struct="atomic" id="12"></list></sounds><blocks></blocks><variables></variables><scripts><script x="30" y="30"><block s="receiveGo"></block><block s="doSetVar"><l>stepcount</l><l>0.1</l><comment w="90" collapsed="false">Initialization of all variables and position</comment></block><block s="doSetVar"><l>applied force</l><l></l></block><block s="doSetVar"><l>Gravity</l><l></l></block><block s="doSetVar"><l>mu</l><l></l></block><block s="doSetVar"><l>username</l><l></l></block><block s="doSetVar"><l>mass</l><l></l></block><block s="gotoXY"><l>0</l><l>0</l></block><block s="doAsk"><l>what&apos;s your name?</l><comment w="90" collapsed="false">Greetings to user</comment></block><block s="doSetVar"><l>username</l><block s="getLastAnswer"></block></block><block s="doSayFor"><block s="reportJoinWords"><list><l>Hello, </l><block var="username"/><l>!</l></list></block><l>2</l></block><block s="doSayFor"><l>Welcome to our physics simulation!</l><l>2</l></block><block s="doSayFor"><l>This simulation attmepts to visually represent the effects frction has on an object that is accelerating due to a force!</l><l>7</l><comment w="90" collapsed="false">Explanation to user about what program is and what it does.</comment></block><block s="doSayFor"><l>Some helpful terminology to know:</l><l>4</l></block><block s="doSayFor"><l>Acceleration, the rate at which an objects speed is changing! It is measured in meters per second squared!</l><l>6</l></block><block s="doSayFor"><l>Newtons, the unit of force, are equivalent to the amount of force required to accelerate 1kg of mass, to an acceleration of 1m/s^2</l><l>7</l></block><block s="doSayFor"><l>Press the 1 key to learn about the force of friction!</l><l>4</l></block><block s="doSayFor"><l>Press the 2 key to learn about what weight in physics is!</l><l>4</l></block><block s="doSayFor"><l>Press the 3 key to learn about what normal force is!</l><l>4</l></block><block s="doSayFor"><l>And press the 4 key to learn about the applied force!</l><l>4</l></block><block s="doSayFor"><l>when your ready, press the spacebar to start the simulation!</l><l>4</l></block><block s="doSetVar"><l>broadcast</l><l>1</l></block><block s="doWaitUntil"><block s="reportKeyPressed"><l><option>space</option></l></block></block><block s="doUntil"><block s="reportIsA"><block var="mu"/><l><option>number</option></l></block><script><block s="doAsk"><l>Hello! for this function to work, I need a value for mu (the coefficent of friction between two surface) (Recommnended amount is between zero and one)</l></block><block s="doSetVar"><l>mu</l><block s="getLastAnswer"></block></block><block s="doIf"><block s="reportNot"><block s="reportIsA"><block var="mu"/><l><option>number</option></l></block></block><script><block s="doSayFor"><l>Please put in a number.</l><l>2</l></block></script></block></script><comment w="90" collapsed="false">asks for and determines if a value is a number.</comment></block><block s="doUntil"><block s="reportAnd"><block s="reportIsA"><block var="mass"/><l><option>number</option></l></block><block s="reportGreaterThan"><block var="mass"/><l>0</l></block></block><script><block s="doAsk"><l>I also need you to give me the mass of the object in kilograms</l></block><block s="doSetVar"><l>mass</l><block s="getLastAnswer"></block></block><block s="doIf"><block s="reportAnd"><block s="reportNot"><block s="reportIsA"><block var="mass"/><l><option>number</option></l></block></block><block s="reportGreaterThan"><block var="mass"/><l>0</l></block></block><script><block s="doSayFor"><l>Please put in a number greater than 0.</l><l>2</l></block></script></block></script></block><block s="doUntil"><block s="reportIsA"><block var="Gravity"/><l><option>number</option></l></block><script><block s="doAsk"><l>I also need you to give me the amount of acceleration due to gravity ie, how hard gravity pulls on objects in newtons! (on Earth this value is about 9.8 newtons)</l></block><block s="doSetVar"><l>Gravity</l><block s="getLastAnswer"></block></block><block s="doIf"><block s="reportNot"><block s="reportIsA"><block var="Gravity"/><l><option>number</option></l></block></block><script><block s="doSayFor"><l>Please put in a number.</l><l>2</l></block></script></block></script></block><block s="doUntil"><block s="reportIsA"><block var="applied force"/><l><option>number</option></l></block><script><block s="doAsk"><l>Lastly, I need you to tell me how much force is applied to the object in newtons. (note: you probably want to add more than you think.)</l></block><block s="doSetVar"><l>applied force</l><block s="getLastAnswer"></block></block><block s="doIf"><block s="reportNot"><block s="reportIsA"><block var="applied force"/><l><option>number</option></l></block></block><script><block s="doSayFor"><l>Please put in a number.</l><l>2</l></block></script></block></script></block><block s="doIfElse"><block s="reportGreaterThan"><custom-block s="Fnet %s %s %s"><block var="mass"/><block var="mu"/><block var="Gravity"/></custom-block><l>-1</l></block><script><block s="doIfElse"><block s="reportEquals"><custom-block s="Fnet %s %s %s"><block var="mass"/><block var="mu"/><block var="Gravity"/></custom-block><l>0</l></block><script><block s="doSayFor"><l>Your object is moving at a constant velocity!</l><l>2</l></block><block s="doSayFor"><l>This is because the net force on the object is 0!</l><l>2</l></block><block s="doSayFor"><l>Press the spacebar to stop the program at any time!</l><l>2</l></block><block s="doUntil"><block s="reportKeyPressed"><l><option>space</option></l></block><script><block s="forward"><l>10</l></block><block s="doIf"><block s="reportLessThan"><l>240</l><block s="xPosition"></block></block><script><block s="gotoXY"><l>-240</l><l>0</l></block></script></block></script></block></script><script><block s="doSayFor"><l>Press the spacebar to stop the program at any time!</l><l>2</l></block><block s="doUntil"><block s="reportKeyPressed"><l><option>space</option></l></block><script><block s="forward"><block s="reportPower"><block s="reportQuotient"><custom-block s="Fnet %s %s %s"><block var="mass"/><block var="mu"/><block var="Gravity"/></custom-block><block var="mass"/><comment w="90" collapsed="true">Porpouse: to determine net force on an object&#xD;Inputs: mass and gravity&#xD;output: Net force</comment></block><block var="stepcount"/><comment w="90" collapsed="true">Block that acellerates the object.</comment></block></block><block s="doIf"><block s="reportLessThan"><l>240</l><block s="xPosition"></block></block><script><block s="gotoXY"><l>-240</l><l>0</l></block></script></block><block s="doChangeVar"><l>stepcount</l><l>.01</l></block></script></block><block s="gotoXY"><l>0</l><l>0</l></block><block s="doSayFor"><l>Press the space key to see the size of each of the forces in the current simulation!</l><l>5</l></block><block s="doSayFor"><l>Again, use the 1, 2, 3, and 4 keys to cycle through the different forces!</l><l>4</l></block><block s="doSayFor"><l>You can also press the 5 key to see the total net force exerted on the object and how much acceleration that force caused, in meters per second squarded</l><l>8</l></block><block s="doSetVar"><l>broadcast</l><l>2</l></block></script><comment w="90" collapsed="false">if net force is 0 or grater thren the object moves.</comment></block></script><script><block s="doSayFor"><l>Your applied force to the object wasnt enough to overcome the objects friction with the ground!</l><l>4</l></block></script></block><block s="gotoXY"><l>0</l><l>0</l></block><block s="doSayFor"><l>Press the green flag to restart the program!</l><l>2</l></block><block s="doStopThis"><l><option>all</option></l></block></script><script x="448.9999999999984" y="771.0000000000001"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>5</option></l></block><block s="reportEquals"><block var="broadcast"/><l>2</l></block></block></block><block s="doSayFor"><block s="reportJoinWords"><list><l>The net force acting on your object was</l><block s="reportDifference"><block var="applied force"/><block var="friction force"/></block></list></block><l>3</l><comment w="90" collapsed="false">States the net force on the object,</comment></block><block s="doSayFor"><block s="reportJoinWords"><list><l>This force caused an acceleration of </l><block s="reportQuotient"><custom-block s="Fnet %s %s %s"><block var="mass"/><block var="mu"/><block var="Gravity"/></custom-block><block var="mass"/></block><l> m/s^2!</l></list></block><l>2</l></block></script></scripts></sprite><sprite name="Normal force" idx="5" x="-5" y="92" heading="90" scale="0.5" volume="100" pan="0" rotation="1" draggable="true" hidden="true" costume="1" color="17.84999999999996,0,127.5,1" pen="tip" id="354"><costumes><list id="355"><item><costume name="Untitled" center-x="33.5" center-y="130.5" 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id="356"/></item></list></costumes><sounds><list struct="atomic" id="357"></list></sounds><blocks></blocks><variables></variables><scripts><script x="20" y="30"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>space</option></l></block><block s="reportEquals"><block var="broadcast"/><l>1</l></block></block></block><block s="hide"></block></script><script x="20" y="108.00000000000006"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>space</option></l></block><block s="reportEquals"><block var="broadcast"/><l>2</l></block></block></block><block s="show"></block></script><script x="20" y="185.99999999999994"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>3</option></l></block><block s="reportEquals"><block var="broadcast"/><l>2</l></block></block></block><block s="show"></block><block s="doSayFor"><block s="reportJoinWords"><list><l>Based on the numbers you gave us, the simulation calculated that your normal force was </l><block var="normal force"/><l>!</l></list><comment w="90" collapsed="false">States the value of normal in the given simulation.</comment></block><l>4</l></block></script><script x="20" y="329.00000000000006"><block s="receiveGo"></block><block s="setHeading"><l>90</l></block><block s="gotoXY"><l>-5</l><l>92</l></block><block s="show"></block><block s="doUntil"><block s="reportEquals"><block var="broadcast"/><l>1</l></block><script><block s="doWaitUntil"><block s="reportKeyPressed"><l><option>3</option></l></block><comment w="185" collapsed="false">When the 3 key is pressed, these speech bubbles will run. </comment></block><block s="doSayFor"><l>Hello!</l><l>2</l><comment w="201" collapsed="false">These speech bubbles explain what normal force is</comment></block><block s="doSayFor"><l>I am the normal force!</l><l>2</l></block><block s="doSayFor"><l>Normal force is the force that a sirface exerts on an object that is resting on it.</l><l>3</l></block><block s="doSayFor"><l>If a surface doesnt break from an object resting on it, then the normal force the surface exerts on the object acts upward!</l><l>5</l></block><block s="doSayFor"><l>The normal force is equal to the weight, since the surface only has to push against an object as hard as the object pushes against it.</l><l>9</l></block></script></block></script></scripts></sprite><sprite name="Friction" idx="3" x="-90" y="-5" heading="0" scale="0.5" volume="100" pan="0" rotation="1" draggable="true" hidden="true" costume="1" color="17.84999999999996,0,127.5,1" pen="tip" id="436"><costumes><list id="437"><item><costume name="Untitled" center-x="33.5" center-y="130.5" 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id="438"/></item></list></costumes><sounds><list struct="atomic" id="439"></list></sounds><blocks></blocks><variables></variables><scripts><script x="14" y="243.99999999999983"><block s="receiveGo"></block><block s="setHeading"><l>0</l></block><block s="gotoXY"><l>-90</l><l>-5</l></block><block s="show"></block><block s="doUntil"><block s="reportEquals"><block var="broadcast"/><l>1</l></block><script><block s="doWaitUntil"><block s="reportKeyPressed"><l><option>1</option></l></block></block><block s="doSayFor"><l>Hello!</l><l>2</l><comment w="90" collapsed="false">Explains what friction does to an object</comment></block><block s="doSayFor"><l>I am the friction force, or the force that is taken from an object that is sliding along a surface!</l><l>5</l></block><block s="doSayFor"><l>The stickier a surface is, the more friction it has!</l><l>2</l></block><block s="doSayFor"><l>Friction is calculated by multiplying the coefficient of friction, or mu, by the normal force, which you can learn about by pressing the 3 key!</l><l>6</l></block></script></block></script><script x="10" y="10"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>space</option></l></block><block s="reportEquals"><block var="broadcast"/><l>2</l></block></block></block><block s="show"></block></script><script x="163.9999999999999" y="197.99999999999983"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>3</option></l></block><block s="reportEquals"><block var="broadcast"/><l>2</l></block></block></block><block s="show"></block><block s="doSayFor"><block s="reportJoinWords"><list><l>Based on the numbers you gave us, the simulation calculated that your normal force was </l><custom-block s="friciton force %s %s"><block var="mu"/><custom-block s="normal force %s %s"><block var="mass"/><block var="Gravity"/></custom-block></custom-block><l>!</l></list></block><l>2</l></block></script><script x="248.9999999999999" y="100.99999999999994"><block s="receiveCondition"><block s="reportAnd"><block s="reportKeyPressed"><l><option>space</option></l></block><block s="reportEquals"><block var="broadcast"/><l>1</l></block></block></block><block s="hide"></block></script></scripts></sprite><sprite name="Applied force" idx="6" x="90" y="5" heading="180" scale="0.5" volume="100" pan="0" rotation="1" draggable="true" hidden="true" costume="1" color="17.84999999999996,0,127.5,1" pen="tip" id="521"><costumes><list id="522"><item><costume name="Untitled" center-x="33.5" center-y="130.5" 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