Advertisements
Advertisements
प्रश्न
Friction depends on the ______ of surfaces.
Advertisements
उत्तर
Friction depends on the nature of surfaces.
Explanation:
Friction depends on the nature of surfaces in contact. For a given pair of surfaces, friction depends upon the state of smoothness of those surfaces. Friction depends on how hard the two surfaces press together.
APPEARS IN
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.
Explain why sportsmen use shoes with spikes.
Give examples to show that friction is both a friend and a foe.
Give an example to illustrate the existence of the force of friction.
State two factors which directly affect the force of friction.
Give three examples to illustrate that friction is a necessary evil.
Define static friction
Define rolling friction
Answer the following.
What do you understand by a force?
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?
Tick the most appropriate answer.
Friction is offered by
Tick the most appropriate answer.
Friction for an object can be reduced by
Fill in the blank.
Rolling friction is ........... than sliding friction.
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 short.
Define rolling friction and give an example where rolling. friction comes into play.
Why is a ball bearing used in a cycle hub?
Explain how friction can be minimized.
In the following figure, a boy is shown pushing the box from right to left. The force of friction will act on the box
