Question:

A disc is rolling the velocity of its centre of mass is Vcm then which one will be correct

Updated On: Apr 21, 2025
  • The velocity of highest point is 2Vcm and point of contact is zero
  • The velocity of highest point is Vcm and point of contact is Vcm
  • The velocity of highest point is 2Vcm and point of contact is Vcm
  • The velocity of highest point is 2 Vcm and point of contact of contact is 2Vcm
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The Correct Option is A

Solution and Explanation

The correct option is(A): The velocity of highest point is 2Vcm and point of contact is zero.
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Concepts Used:

System of Particles and Rotational Motion

  1. The system of particles refers to the extended body which is considered a rigid body most of the time for simple or easy understanding. A rigid body is a body with a perfectly definite and unchangeable shape.
  2. The distance between the pair of particles in such a body does not replace or alter. Rotational motion can be described as the motion of a rigid body originates in such a manner that all of its particles move in a circle about an axis with a common angular velocity.
  3. The few common examples of rotational motion are the motion of the blade of a windmill and periodic motion.