Advertisements
Advertisements
प्रश्न
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.
पर्याय
True
False
उत्तर
True
APPEARS IN
संबंधित प्रश्न
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
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.
Fill in the blank.
More the roughness of a surface, greater is the ........................
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Fill in the blank
Rolling friction is ............. than sliding friction.
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
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 detail.
Define friction and explain how it is useful to us.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
