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प्रश्न
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.
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उत्तर
It is because when the object is at rest, static friction occurs. The static friction is maximum when the applied force is just short of the force required to start motion between the two bodies in contact. Once the object starts moving, friction (resistance) we feel decreases.
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संबंधित प्रश्न
Write true or false.
The sliding friction is more than the rolling friction.
State two factors which directly affect the force of friction.
When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.
Define rolling friction
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Sliding friction and rolling friction are types of .................. friction.
Tick the most appropriate answer.
Force of friction comes into play when a/an
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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.
Answer the following in detail.
Write the characteristics of the force of friction?
Rolling friction is slightly greater than sliding friction.
