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प्रश्न
How do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?
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उत्तर
The nail becomes hot due to friction. Friction changes kinetic energy to heat.
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संबंधित प्रश्न
Give examples to show that friction is both a friend and a foe.
Fill in the blank.
We use ball bearings to .................. the friction.
Name the two kinds of forces in nature.
List three ways of reducing friction.
Define rolling friction
State if the following statement is true or false. Correct the statement if it is false.
Like charges always attract each other.
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
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 helps us to grip the objects in our hand.
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
