Which is an example of mechanical energy?
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Which of the following statement are true mechanical energy? Include all that apply.
1.The total amount of mechanical energy of an object is the sum of its potential energy and the kinetic energy.
2. Heat is a form of mechanical energy.
3. The mechanical energy of an object is always conserved.
4. When non-conservative forces do work, energy is transformed from kinetic to potential (or vice versa), but the total mechanical energy is conserved.
5. A bowling ball is mounted from a ceiling by way of a strong cable. It is a drawback and released, allowed to swing as a pendulum. As it swings from its highest position to its lowest position, the total mechanical energy is mostly conserved.
6. When a friction force does work on an object, the total mechanical energy of that object is changed.
7. The total mechanical energy of an object remains constant if the only forces doing work on the object are conservative forces.
8. If an object gains mechanical energy, then one can be certain that a non-conservative force is doing work.
Which of the following statements is/are true?Check all that apply.
Define mechanical energy. What is the relationship of mechanical energy to nonconservative forces? What happens to mechanical energy if only conservative forces act?
