Physics
Grade-9
Easy

Question

Which of the following is NOT exhibited by a rotating fan?

  1. Circular motion
  2. Rotatory motion
  3. Periodic motion
  4. Rectilinear motion

Hint:

Oscillatory motion is the to and fro motion of a particle which is repeated over a fixed interval of time.

The correct answer is: Rectilinear motion


    The blades of the fan describe the circular motion. During the rotation, the different particles repeat their motion about a certain point, in a fixed interval of time, exhibiting periodic motion.

    Oscillatory motion is the to and fro motion of a particle which is repeated over a fixed interval of time.
    Fan does not shows oscillatory motion.It shows periodic motion not oscillatory motion.
    Fan does not shows to and fro position about a mean position.

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