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Consider the following types of motion.  A. Periodic Motion B. Straight Line Motion C. Rotational Motion D. Circular Motion The motion of a pendulum can be categorised in which of the following types of motion?

Consider the following types of motion.  A. Periodic Motion B. Straight Line Motion C. Rotational Motion D. Circular Motion The motion of a pendulum can be categorised in which of the following types of motion? Correct Answer A

Concept:

Motion and Its Types 

  • Motion is the change in the position of an object with time. 
  • Examples of motion include a flying bird, a moving car, a running boy, a child sliding, motion of spinning top etc.
  • There are different types of motion. Some of them are Straight line motion, circular motion, periodic motion, vibratory motion and rotatory motion. 

Another categorization of Motion is as follows

Types of Motion

Definition

Example

Straight Line or Linear Motion

Motion along a straight line

Motion of a car on straight road.

Circular Motion

The motion of an object on a circular track

Giant wheel

Periodic Motion

Motion repeats itself after a period of time.

Pendulum, swing

Vibratory Motion

Motion in which the object vibrates along an axis

The motion of string of the guitar

Rotational Motion

Motion in which the body rotates along an axis

The motion of the wheel of a cycle.

.Explanation:

  • Periodic motion is the type of motion that repeats itself after a certain period of time. 
  • A pendulum is the perfect example of periodic motion. 
  • The time taken by a pendulum to reach from one its mean position to one end is the same as the time taken from mean position to another end.
  • So, a certain time period is maintained. 
  • The time period is fixed. 
  • Pendulum clocks have a pendulum which is called a second pendulum as it takes one second to reach from mean position to extreme position. 


The correct statement will be only A. 

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  • The motion of a pendulum is not circular as it does not complete one circle.
  • Also, it is not moving along its axis, it is not rotational.  

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