Learning Goal: Understand what work is.
Today: Begin the It's All Uphill Lab
- Materials: Scale/force probe, dynamics cart, meterstick/ruler, board/ramp, graph paper, masses, protractor
- PURPOSE: Determine the effect of the angle of incline upon the force needed and upon the work done when pulling a cart up an incline to the same height at a constant speed.
- PRO-TIPS:
- Use a low-friction cart. They are pretty light, so add some mass to improve your measurements, reduce error.
- make sure your setup is flexible enough to set the ramp at several different angles while pulling the cart to the same height every time
- use a scale that is as close as possible to your expected force measurements
- Be careful about the angle with which you pull the cart. Refer to your notes about what counts as work!
- You will be responsible for producing
- Data table showing incline angle, force, displacement and work for each trial (5 data points minimum).
- Graphs on graph paper or spreadsheet of force vs. incline angle and work vs. incline angle. Each graph should include a best-fit line.
- Demonstrate the Big Three in the lab: Precision, Accuracy, Consistency
Assignment:
- Energy Unit Assignment Sheet
- Due 2/16: packet pp. 1,4
- Due 2/17: Video Notes on Power
- Find time to finish packet work