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Question
State if the following statement is true or false. Correct the statement if it is false.
Friction has no relation with our walking or running.
Options
True
False
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Solution
False.
Friction helps us with our walking or running.
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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.
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Answer the following in a word or two or in a sentence.
Why does a rolling ball stop after moving some distance?
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Weight remaining the same, friction is independent of ............. of surface in contact.
Tick the most appropriate answer.
Friction for an object can be reduced by
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Rolling friction is ............. than sliding friction.
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Friction depends upon the ............... of an object.
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.
