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प्रश्न
Fill in the blank.
Weight remaining the same, friction is independent of ............. of surface in contact.
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उत्तर
Weight remaining the same, friction is independent of area of surface in contact.
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संबंधित प्रश्न
A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is
- the static friction
- sliding friction and
- rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.
State if the following statement is true or false. Correct the statement if it is false.
If two forces acting in opposite directions on a body arc of equal magnitude, then the body will not move.
Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?
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 always
Fill in the blank
Rolling friction is ............. than sliding friction.
Fill in the blank.
Friction is a type of .................
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.
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.
We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other. Give reason.
