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प्रश्न
Answer the following in short.
Define force. Write its SI unit.
उत्तर
A push or pull acting upon an object as a result of its interaction with another object is called force. Its SI unit is the newton (N).
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संबंधित प्रश्न
Friction depends on the ______ of surfaces.
When a glass rod is rubbed with a piece of silk cloth the rod ______.
Select the correct alternative.
Friction is reduced by
Answer the following in a word or two or in a sentence.
Why does a rolling ball stop after moving some distance?
Answer the following in short.
What do you understand by normal force?
Fill in the blank.
More the roughness of a surface, greater is the ........................
Tick the most appropriate answer.
Friction produces
State if the following statement is true or false. Correct the statement if it is false.
Friction is offered by all the three states of matter.
Answer the following in short.
When you push something heavy, the resistance you feel decreases as soon as the object starts moving. Explain the reason.
Assertion: We can live very happily if friction is not present in nature.
Reason: The airplane shape is streamlined to reduce the effort of frictional force.
