Physics
Grade-9
Easy
Question
“Machines get heated when they are operated for a long time.” The _______ aspect of friction is seen in this.
- Advantage
- Disadvantage
- Either a or b
- None of the above
Hint:
Machines get heated when they are operated for a long time due to the wastage of energy. This is caused because of the long term friction inside the moving parts.
The correct answer is: Disadvantage
Disadvantage of friction is seen in this image.
- The machines are heated when they are operated for a long time.
- This is because of the constant, long term friction inside the internal moving parts of the machines.
- This heating effect is a disadvantage of friction.
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