Advertisements
Advertisements
Question
Friction depends on the ______ of surfaces.
Advertisements
Solution
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.
RELATED QUESTIONS
Give examples to show that friction is both a friend and a foe.
Fill in the blank.
We use ball bearings to .................. the friction.
Select the correct alternative.
Friction is reduced by
What is the cause of friction?
State two factors which directly affect the force of friction.
Define sliding friction
Define rolling friction
Answer the following.
What do you understand by a force?
Answer the following in short.
Define force. Write its SI unit.
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 always
Fill in the blank.
Rolling friction is ........... than sliding friction.
Fill in the blank.
Friction depends upon the ............... of an object.
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.
Answer the following in detail.
Define friction and explain how it is useful to us.
Rolling friction is slightly greater than sliding friction.
Is there any possibility of making a special device to measure the magnitude of friction directly?
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.
