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Purpose:
Using a 1st class lever simulation you will explore and verify
the accuracy of this simple machine work equation:
WORKout = WORKin
Effort Force x Effort Distance = Resistance Force x Resistance
Distance
Fe x De = Fr x Dr
Setup:
CLICK HERE
to start the virtual lever lab illustrated below:
Procedure:
- Select 2 under # of Masses
- Drag each mass to the end of the seesaw (2.00 meters)
- Adjust the first mass to 5 kg and the second mass to 3 kg
- Use the values in the table below and the WORK EQUATION to
determine the missing values
- Verify these values in the simulator by adjusting the masses
and distances and selecting RELEASE to test
Data:
| Fe (mass 1) |
De |
WORKin
Fe x De |
Fr (mass 2) |
Dr |
WORKout
Fr x Dr |
Balanced? |
| 5 kg |
.2 m |
|
2.5 kg |
? |
|
|
| 7 kg |
.6 m |
|
? |
1.4 m |
|
|
| 4 kg |
? |
|
10 kg |
.6 m |
|
|
| ? |
1.4 m |
|
6 kg |
.4 m |
|
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Analysis/Conclusion:
Finally, update your website with the details of this lab experience
including a descriptive summary, all data, calculations and errors!
The instructor will grade this lab
web entry according to this rubric.
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