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Which option is correct about the wheel of a car moving on the road?

This question was previously asked in
BSSC Inter Level Pre PYP (29th Jan 2017)
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  1. Rolling friction > Static friction > Kinetic friction
  2. Static friction > Kinetic friction > Rolling friction
  3. Static Friction > Rolling Friction > Kinetic Friction
  4. Rolling friction > Kinetic friction > Static friction

Answer (Detailed Solution Below)

Option 2 : Static friction > Kinetic friction > Rolling friction
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Detailed Solution

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The correct option is Static friction > Kinetic friction > Rolling friction.

Key Points

  • Friction: The motion of any object is resisted by an opposing force known as the force of friction.
  • The rolling friction is very low as compared to the other two frictions.
  • If we compare kinetic and static friction then the value of static friction is more because it is present when the motion is not started after overcoming this friction object is able to move.
  • Static friction > Kinetic friction > Rolling friction

Additional Information

Friction is of three types:

  • Static Friction: The friction force encountered when the object is in the rest position that's static friction.
  • Kinetic Friction: If the object is sliding against each other then the friction present at that time is kinetic friction.
  • Rolling Friction: If the object is rolling on the surface the friction which is present at that time between the surfaces is known as Rolling friction.
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