Give three reasons for the loss in energy in a machine.

Explanation

To answer the question regarding the loss of energy in a machine, we can identify three primary reasons:

### Step-by-Step Solution:

1. **Friction**:
- One of the main reasons for energy loss in machines is friction.
- Friction occurs between the moving parts of the machine, such as gears, bearings, and other components.
- This friction generates heat, which is a form of energy that is not useful for the machine's operation.
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