Advertisements
Advertisements
प्रश्न
Fill in the blank.
Sliding friction and rolling friction are types of .................. friction.
Advertisements
उत्तर
Sliding friction and rolling friction are types of kinetic friction.
APPEARS IN
संबंधित प्रश्न
Friction depends on the ______ of surfaces.
When a glass rod is rubbed with a piece of silk cloth the rod ______.
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
The eraser gets smaller and smaller as you use it more and more. Explain the reason.
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.
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 detail.
Write the characteristics of the force of friction?
Rolling friction is slightly greater than sliding friction.
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.
