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General Physics Lab: Measurements
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Equipment and setup
- We will use a triple-beam balance, meter stick,
vernier caliper and graduated cup
(see Figure 1) to measure the
mass of volume of various aluminum objects.
- All these aluminum objects (shown in Figure 2)
are made from aluminum
alloy 6061. The aluminum block will be measured
by both the meter stick and the vernier caliper.
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[Click on images to enlarge.]
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TA Notes
- Perform the experiment ahead of time!
- Please review the formulae for the volume of a
block, sphere and cylinder with your students.
- There is an on-line
vernier caliper
tutorial that you may wish your students to
view in class.
- Have students ensure the lab balances are zeroed.
- The uncertainty of a measurement is 20% of the instrument's
least count. For the vernier, the uncertainty is +/- 0.01 cm.
- Before leaving the lab, make sure that all masses have
been removed from the triple-beam balances and that they are
zeroed.
- It is very important to grade your students' lab report for this
first experiment before the second experiment begins! This
is because students must have their data from experiment #1
returned to them before experiment #2 can be done.
- For homework, you may wish to have students review the
on-line Excel
tutorial (specifically, sections 1,2,3,7 & 10).
You may also wish to quiz them on this
at the beginning of the next lab.
- Another homework assignment could be the pre-lab
exercise from the second experiment. This exercise
involves graphing by hand. (We have found that
there is not enough time to
do the pre-lab exercise as well as the density experiment
during one lab period. However, the
graphing by hand exercise is an important one and should
be done.) This homework could count as a quiz grade.
Data, Results and Graphs
Enter TA password to view sample data and results of this
experiment:
Answers to Questions
As of now, there are no on-line answers to the questions
for this experiment.
Lab Manual
CUPOL Experiments
Take a look at these CUPOL experiments for an on-line laboratory
experience:
If you have a question or comment, send an e-mail to Lab Coordiantor:
Jerry Hester
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