How does the internal energy of the saw change when cutting a log?
| May 21, 2021 | education
When sawing a log, the internal energy of the saw increases due to the presence of frictional force between the log and the saw teeth.
The internal energy of the body can be changed in 2 ways: by transferring heat to it and performing work on it. In our case, the internal energy of the saw increases due to the performance of the work of the friction force. An increase in the internal energy of the saw is evidenced by the heating of the cutting surface of the saw, an increase in its temperature.
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