PhET_NetForces-TugOfWar.odt - PhET Forces & Motion: Net...

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PhET Forces & Motion: Net Forces1.You and some friends are at the park. You find some rope and decide you’d like to play a game of tug-of-war. Unfortunately, there are 5 people so youcan’t have an equal amount of people on each side. One of your friends suggests that the two biggest people should be on one side, while the threesmaller people should be on the other side. Do you think this is a fair way to split up teams? Why or why not?
2.Which way do you think the cart will move in each of the pictures below? Explain why you think this.
3.Go toPhET Forces and Motion Basicsand click on theNet Forceicon to test the predictions that you made in the table above(we will be using some of the other experiments later – please avoid them for now). Compareyour predictionsto what actuallyhappensto the cart in each trial.Fill in thelast two columns of the table above,by explaining how your prediction compares to what actuallyhappened and recording the final net force. (Click on “Sum of Forces” and “Values” in the box in the upper rightcorner to see the net force.)
4.As you answer the following questions, support eachof your answers with evidence from your data table.QuestionClaim (Do you agree or disagree with the question?)If not, what happens instead?Evidence From The Dataa.Does a large person alwayswin each competition?b.If one person is pulling oneach side, does the cartalways stay still?c.Does it matter which part ofthe rope a person holds?d.How does the “Sum of Forces”help you?5.What do you think causes objects to move or stay still? Give evidencefrom this activity or your notebook that makes you say that.Tape the Net Forces: Tug-Of-War worksheet in your notebook.

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Term
Fall
Professor
Ms.Jacobs
Tags
Force, Stress, c, 0m

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