1. PENDULUM SWING

2. PROBLEM
 Does the weight of a pendulum affect the
number of swings it completes in 2 minutes?

3. HYPOTHESIS
 If the weight is heavier then it will complete
more swings in 2 minutes

4. MATERIALS
 8.8 kg weight
 4.4 kg weight
 Chalk
 Rope(154 inches)
 Measuring tool/extendable ruler
 Timer(on iPod)
 Counter

5. MATERIALS CONT.

6. PROCEDURE
1. Gather materials
2. Hang rope from tree
3. Put 4.4 kg weight on rope
4. Pull back to swing line and release
5. Count number of swings in 2 minutes
6. Record data and repeat two more times (3 trials total)
7. Take off 4.4 kg weight and attach 8.8 kg weight
8. Follow steps 4 through 6

7. VARIABLES
 CONSTANT VARIABLES- The 2 minute swing time,
length of rope, and how far pulled back
 INDEPENDENT VARIABLE- The 2 different weights
 DEPENDENT VARIABLE- The number of swings

8. RESULTS
Trial Weight (kg) Swings
1 4.4 62
2 4.4 62
3 4.4 61
1 8.8 62
2 8.8 61
3 8.8 60
10s 1s
6 2,2,1,2,1,0

9. GRAPH
0
10
20
30
40
50
60
70
80
1 2 3
NumberofSwingsin2Minutes
Trial Number
Comparison of Pendulum Different Weights
number of swings in 2 minutes on a 154 inch rope
4.4 kg Weight
8.8 kg Weight

10. CONCLUSION
 Does the weight of a pendulum effect the
number of swings it completes in 2 minutes? A
weight with a greater mass requires more of a
push from gravity to accelerate. So being big
balances itself out. The weights fall/swing at the
same rate because the acceleration due to
gravity is the same for both. My hypothesis is
wrong. I predicted that the bigger weight would
swing more, but they complete about the same
number of swings.

11. THE PENDULUM

12. THE PENDULUM CONT.

13. THE PENDULUM CONT.

14. THE PENDULUM CONT.

15. THE PENDULUM CONT.

16. THE END
 PENDULUMS!! 