012-04840E
Dynamics Cart
16
®
Procedure
1. Set up the system as shown in Figure 5.1. Position the cart so that its plunger hangs over the
edge of the table several centimeters.
NOTE:
You will need a long, horizontal table or board for this experiment. A 3/4 inch by 1
foot by 8 foot plywood board is recommended.
2. Arrange to have a stop of some sort to insure that you always use the same pull-back angle for
the hanging meter-stick.
3. Pull the meter-stick or rod back to the pull-back angle that you have chosen, and release it,
allowing it to strike the cart plunger. Record the corresponding values of
y
and
x
in Table 5.1.
4. Repeat step 3 four times for each value of
y
, changing it from roughly 10 to 90 cm in 10 cm
increments.
5. Compute the average value of
x
for each value of
y
.
6. By interpolation, determine the location of
SS1
from your data and record it below Table 5.1.
7. Using
EQN-1,
compute the location of
SS2
and record it below Table 5.1.
8. If time permits, repeat the above after either re-positioning the pivot (i.e. “choking up”) or
adding 100 grams or so at some point on the stick.
NOTE:
This would add a little realism to the experiment, since neither a bat nor a tennis
racket is uniform!
Summary of Contents for ME-9430
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