Advertisements
Advertisements
प्रश्न
The eraser gets smaller and smaller as you use it more and more. Explain the reason.
Advertisements
उत्तर
The eraser gets smaller and smaller as we use it more and more due to frictional force causing wear and tear of the eraser.
APPEARS IN
संबंधित प्रश्न
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
State two factors which directly affect the force of friction.
List three ways of reducing friction.
Answer the following in a word or two or in a sentence.
Why does a rolling ball stop after moving some distance?
Tick the most appropriate answer.
Friction for an object can be reduced by
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 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 the force responsible for opposing the motion between two bodies in contact.
Is there any possibility of making a special device to measure the magnitude of friction directly?
Assertion: Friction always opposes the motion.
Reason: Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
