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प्रश्न
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?
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उत्तर
Because the smooth surface has very less friction.
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संबंधित प्रश्न
A charged glass rod attracts a charged plastic straw.
State two factors which directly affect the force of friction.
Give three examples to illustrate that friction is a necessary evil.
Define static friction
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Sliding friction and rolling friction are types of .................. friction.
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Friction depends upon the ............... of an object.
State if the following statement is true or false. Correct the statement if it is false.
Friction helps us to grip the objects in our hand.
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Complete the analogy.
Knot in a thread : _____ friction : : Ball bearing : _____ friction
