Is mechanical energy always conserved?
Understand the Problem
The question is asking whether mechanical energy, which includes kinetic and potential energy, is always conserved in a physical system. This involves understanding the principles of conservation of energy and the conditions under which mechanical energy may change.
Answer
No
The final answer is No
Answer for screen readers
The final answer is No
More Information
Mechanical energy is the sum of kinetic and potential energy. It is conserved only in the absence of non-conservative forces such as friction or air resistance. When these external forces are present, mechanical energy is not conserved.
Tips
A common mistake is assuming that mechanical energy is always conserved regardless of the presence of external forces. Always check for external forces before applying the principle of conservation of mechanical energy.
