Energy conservation law

The title of the Project: Energy conservation law

Purpose of the work:

  • Study energy conservation law.

Practical part

Choose “Intro” to start the virtual experiment. 

This is a little instruction to the virtual experiment.

Virtual experiment.

Step 1. Turn on the visualization options by clicking the checkboxes. Turn on slow motion. 

Step 2. Let the skater begin from 6 m height point. Notice that when the skater is at the highest point, its total energy is equal to the potential energy. 

Step 3. Notice that when the skater is at the lowest point, its total energy is equal to the kinetic energy and its speed reaches the maximum value. 

Step 4. Notice that when the skater is in the middle point, its total energy is equal to the sum of kinetic energy and potential energy.

Step 5. Notice that the total energy doesn’t exceed the value of the highest potential energy. 

Step 6. Let the skater begin from 4 m height point. What happens? 

Step 7. Make a conclusion. 

Conclusion

The total energy is the sum of kinetic and potential energy. The total energy is constant. Energy doesn’t disappear and doesn’t appear from nowhere; it only transforms from one kind to another.