PURPOSE:

HYPOTHESIS:

MATERIALS:                                                                                 SKETCH:
Ring stand
String
Paper clip
Washer
Stopwatch

PROCEDURE:
1. Hold Pendulum at 90 degrees and release.
2. Start stopwatch at time of release.
3. Stop stopwatch at the end of 10 periods.
4. Record time for ten periods.
5. Calculate time for one period. (Divide the time for the 10 periods by 10) take to two decimal places.
6. Repeat steps 1-5 two more times.
7. Calculate average time of one period.
8. Calculate percent change (% change)

        *% Change = Highest Time – Lowest Time      X     100
                                           Average Time

9. Construct a class histogram

Data Chart:

	Time for 10 periods	Time for one period	AverageFor one Period
Trial 1	_______________________	_______________________	______________________
Trial 2	_______________________	_______________________
Trial 3	_______________________	_______________________

IV:_________________________________________________

DV:________________________________________________

Constant(s):__________________________________________

___________________________________________________

___________________________________________________
 
 

CONCLUSION:

THESIS STATEMENT:

DATA INTERPRETATION:
1. Were the differences in the periods due to the pendulum or due to experimental error?
2. How do you know?
3. Was the % change significant?
4. How do you know?
a. Graph
b. Table
5. How much change can be attributed to experimental error?
6. How do you know?
*% Change

ERRORS:
What are some possible sources of errors for this lab?

CONCLUSION STATEMENT: