KIDS QUIZ
SCIENCE FICTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Smooth surfaces reduce friction.
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true
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false
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Friction is caused by the irregularities on the two surfaces in contact. Larger the irregularities, rougher the surface means more is the friction. Thus, the smoothness of the surface reduces the frictional force.
Detailed explanation-2: -Friction can be reduced by polishing surfaces or using large amount of lubricants such as oil, water, or grease but we cannot reduce friction to zero. Friction exists at even atomic levels too. We cannot completely eliminate friction.
Detailed explanation-3: -Answer: False. Explanation: Smooth surface have less friction because smooth surface have less resistance than rough surface.
There is 1 question to complete.