Advertisements
Advertisements
प्रश्न
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.
विकल्प
True
False
Advertisements
उत्तर
False.
Friction helps us with our walking or running.
APPEARS IN
संबंधित प्रश्न
State two factors which directly affect the force of friction.
Answer the following in short.
Define force. Write its SI unit.
Fill in the blank.
More the roughness of a surface, greater is the ........................
Fill in the blank.
Weight remaining the same, friction is independent of ............. of surface in contact.
Fill in the blank.
The force of friction acting between two bodies in contact while at rest is known as ................ friction.
Answer the following in detail.
Define friction and explain how it is useful to us.
Answer the following in detail.
Write the characteristics of the force of friction?
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
Assertion: Friction always opposes the motion.
Reason: Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
Assertion: There is a danger of a vehicle skidding on a wet road.
Reason: The tires of the vehicle lose their grip on the road due to an increase in friction due to the presence of water on the road.
