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प्रश्न
Rolling friction is slightly greater than sliding friction.
पर्याय
True
False
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उत्तर
Rolling friction is slightly greater than the sliding friction- False.
Correct statement:
Rolling friction is slightly lesser than sliding friction.
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संबंधित प्रश्न
Suppose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it.
Select the correct alternative.
Friction is reduced by
Name the two kinds of forces in nature.
Arrange the following in descending order:
- static friction
- sliding friction and
- rolling friction?
A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is
- the static friction
- sliding friction and
- rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.
Answer the following.
What do you understand by a force?
Fill in the blank.
.................... is the SI unit of force.
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?
Friction depends on the ______ of two surfaces in contact.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
