The objects which repeats its motion after some time is called _________ .

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SSC MTS (2022) Official Paper (Held On: 15 Jun, 2023 Shift 3)
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  1. Rectilinear motion
  2. semi - circular motion
  3. periodic motion
  4. Circular motion

Answer (Detailed Solution Below)

Option 3 : periodic motion
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SSC MTS 2024 Official Paper (Held On: 01 Oct, 2024 Shift 1)
90 Qs. 150 Marks 90 Mins

Detailed Solution

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The correct answer is periodic motion.

Key Points

  • A motion that repeats itself after a set amount of time is called periodic motion.
  • When a body repeatedly moves along a certain path over a predetermined amount of time, it is said to be exhibiting periodic motion.
  • The term "time period" refers to the interval of time after which the body's motion is repeated.
  • Examples of periodic motions:
    • earth’s rotation around the sun
    • motions of the hands of a clock
  • When a body moves in a non-periodic manner, it doesn't repeat the same motion after a set amount of time.
    • A bouncing ball, for instance, moves in a non-periodic manner.

Additional Information

  • Rectilinear motion or linear motion is a type of motion that only moves in one direction or on one axis.
    • Every parameter connected to motion is pointed in the same direction.
    • Consequently, the motion is sometimes referred to as one-dimensional motion.
    • Examples:
      • soldiers walking on the ground or marching during the event.
      • arrow fired by an archer
      • a car moving on a road
      • a person jogging in park
  • An object moving while rotating in a circle is referred to as being in circular motion.
    • There are two types of circular motion: uniform and non-uniform.
    • The angular rate of rotation and speed will remain constant in uniform circular motion, whereas the rate of rotation will fluctuate in non-uniform motion.
    • Common examples of circular motion:
      • rotating ceiling fan
      • moving car’s wheel
      • blades of windmill
      • Merry-Go-Round
  • When the object rotates for half circle and comes back, this is called semi-circular motion.

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