At Wood i need Introduction and Purpose: Discussion / Conclusion: and all the question below Atwood’s Machine By: Jackson Widener Thomas Jer

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Introduction and Purpose:

  

Discussion / Conclusion:

and all the question below

Atwood’s Machine

By: Jackson Widener

Thomas

Jeremy

Sixto

Eric

Introduction and Purpose:

Diagram:



Data:

Part I: Keeping Total Mass Constant

Trial


m1

(g)


m2

(g)

Acceleration

(m/s2)

Calculated Acceleration


m

(kg)


mT

(kg)

1

200

200

0

0

0

400

2

195

205

0.271

0.245

10

400

3

190

210

0.41

0.49

20

400

4

185

215

0.557

0.735

30

400

5

180

220

0.625

0.98

40

400

Part II: Keeping The Mass Difference Constant

Trial


m1

(g)


m2

(g)

Acceleration

(m/s2)

Calculated Acceleration


m

(kg)


mT

(kg)

1

120

100

0.594

20

220

2

140

120

0.557

20

260

3

160

140

0.502

20

300

4

180

160

0.486

20

340

5

200

180

0.453

20

380

Discussion / Conclusion:

Questions:

1. Draw a free body diagram of m1 and another free body diagram of m2. Using these diagrams, apply Newton’s second law to each mass. Assume that the tension is the same on each mass and that they have the same acceleration. From these two equations, find an expression for the acceleration of m1 in terms of m1, m2, and g. Compare the expression to your result in Step 5 of Analysis.

2. For each of the experimental runs you made, calculate the expected acceleration using the expression you found with Newton’s second law of motion and the specific masses used. Compare these figures with your experimental results. Are the experimental acceleration values low or high? Why?

3. An unknown mass can be placed on one side of the Atwood’s machine. Using lab measurements and any necessary calculations, the mass of the unknown can be determined. Try it.

4. How does the force exerted upward by the pulley change as the system begins accelerating? Why? Set up an experiment to determine how this force changes.

5. How does the tension in the string change as the masses start to move? Or does it?

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