EASY
Earn 100

Rolling friction is slightly greater than the sliding friction.

75% studentsanswered this correctly

Important Questions on Friction

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Science>Physics>Friction>Increasing and Reducing Friction
Why are grooves provided in the soles of shoes?
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Science>Physics>Friction>Increasing and Reducing Friction
Why are lubricants (oil or grease) applied to rubbing surfaces of machines?
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Science>Physics>Friction>Increasing and Reducing Friction
Which of the following should be used to reduce friction on a carrom board?
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Science>Physics>Friction>Increasing and Reducing Friction
Why do we sprinkle fine powder on carrom board?
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Science>Physics>Friction>Increasing and Reducing Friction
What is meant by ‘rolling friction’?
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Science>Physics>Friction>Increasing and Reducing Friction
What is meant by lubrication? Why is it important?
EASY
Science>Physics>Friction>Increasing and Reducing Friction
Why do kabaddi players rub their hands with dry soil?
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
Why are machine parts oiled?
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
Explain with the help of diagrams, how the use of oil reduces friction between two surfaces in contact with each other.
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
How will you reduce friction between those machine parts which rub against each other? Give the simplest method.
EASY
Science>Physics>Friction>Increasing and Reducing Friction
Which force gets reduced when the two surfaces in contact are polished to make them smooth?
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Science>Physics>Friction>Increasing and Reducing Friction
Car wheels often spin on icy roads. Explain why.
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Science>Physics>Friction>Increasing and Reducing Friction
Explain why, wheels are so useful.
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Science>Physics>Friction>Increasing and Reducing Friction
Why are treads made in the surface of tyres?
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Science>Physics>Friction>Increasing and Reducing Friction
Which of the following statements is incorrect?
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Science>Physics>Friction>Increasing and Reducing Friction
Why do brake pads of bicycles have to be replaced quite often?
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Science>Physics>Friction>Increasing and Reducing Friction
Cotyledons are also called-
EASY
Science>Physics>Friction>Increasing and Reducing Friction
Ball-bearing is a device that usually converts:
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
Explain why, sportsmen use shoes with spikes.
EASY
Science>Physics>Friction>Increasing and Reducing Friction
Why is the surface of a slide polished to make it smooth?