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प्रश्न
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
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उत्तर
Bicycles use ball bearings to reduce friction between the pedals and the crank.
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संबंधित प्रश्न
Explain why sportsmen use shoes with spikes.
Name the two kinds of forces in nature.
Tick the most appropriate answer.
Force of friction comes into play when a/an
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Tick the most appropriate answer.
Friction produces
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Fill in the blank.
Friction is a type of .................
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
Rolling friction is slightly greater than sliding friction.
Analogy
Objects placed at rest on earth: ______:: Bodies slide over the surface on other body: ______.
