Advertisements
Advertisements
प्रश्न
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.
Advertisements
उत्तर
Frictional force (friction)
APPEARS IN
संबंधित प्रश्न
Select the correct alternative.
Friction is reduced by
What is the cause of friction?
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.
Sliding friction and rolling friction are types of .................. friction.
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
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.
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.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
