Question

In many situations, energy is lost to the work done by friction. But the law of conservation of energy says energy cannot be created or destroyed. So where does the "lost" energy go?

Answer 1

Heat energy

Step-by-step explanation:

The seemingly lost energy due to the work done by friction is lost to heat energy.

When we account for heat energy of the system, it is clearly seen that it is not lost as we perceive it.

• The law of conservation of energy also suggests that energy is transformed and neither lost nor created.
• The work done by friction is transformed into heat energy of the system.