Advertisements
Advertisements
प्रश्न
How do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?
उत्तर
The nail becomes hot due to friction. Friction changes kinetic energy to heat.
APPEARS IN
संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
Give examples to show that friction is both a friend and a foe.
Write true or false.
Liquids offer more friction than the gases.
Define static friction
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.
Tick the most appropriate answer.
Friction is offered by
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
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.
Answer the following in short.
List the various states of matter that offer frictional force?
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.
