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प्रश्न
Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?
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उत्तर
Because the smooth surface has very less friction.
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संबंधित प्रश्न
Friction depends on the ______ of surfaces.
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Select the correct alternative.
Friction is reduced by
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Answer the following in a word or two or in a sentence.
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Answer the following in short.
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Fill in the blank.
Sliding friction and rolling friction are types of .................. friction.
Rolling friction is slightly greater than sliding friction.
Is there any possibility of making a special device to measure the magnitude of friction directly?
