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Directions: Do the following activity then answer the questions that follow. (ANSWER ASAP PLEASEE) Materials Needed:
- a string
- scissors
- two 500ml. water bottles (filled with water)
- ruler
Procedure:
1. Prepare the needed materials.
2. With the ruler, measure the string about 60cm in length and then cut it by
using scissors.
3. Next, cut half of the string to get 30cm in length and tie up to each of the
bottles filled with water.
4. Then adjust the string and tie it to each bottle approximately 20cm.
5. With the 2 stands, measure the string approximately 70cm and tie it at each of
the stands.
6. Tie each bottle with the string to make a pair of pendulums. (The distance of
each bottle is approximately 30cm.
7. Swing one of the bottles and observe what will happen next.
Guide Questions:
1. As one bottle moved, what happened to the other bottle?
2. During the swinging of the bottle, where is the potential energy? Where is the
kinetic energy?
3. How is energy transformed during the activity? How is the energy consumed?
4. Based on the activity, what is the Law of Conservation of Mechanical Energy?
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