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प्रश्न
Answer the following in short.
List the various states of matter that offer frictional force?
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उत्तर
The force of friction is offered by all the three states of matter – solids, liquids, and gases.
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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.
Name the two kinds of forces in nature.
Define sliding friction
Answer the following in detail.
What are the various effects of force? State one example of each.
Tick the most appropriate answer
Friction always
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?
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
Answer the following in short.
How can sliding friction be changed into rolling friction easily?
Assertion: There is a danger of a vehicle skidding on a wet road.
Reason: The tires of the vehicle lose their grip on the road due to an increase in friction due to the presence of water on the road.
