TYPES OF MOTION

 TYPES OF :MOTION

       Generally the motion is of three types, translatory motion, rotatory motion and vibratory motion.

1)      Translatory Motion:

       When a body changes its position as a whole, is called its translatory motion. The line or path of

        motion could be straight or curved.

Examples:

        Motion of a horse or motion of a ball, moving car, falling bodies, rowing boats, flying birds are

       examples of translatory motion. translatory motion may be of the following types.

a)      Linear Motion:

If a body moves along a straight line, its motion is called linear motion. e.g motion of free falling bodies.

b)      Circular Motion:

If a body moves in a circle its motion is called circular motion. e.g whirling of a stone attached to a string.

c)      Random Motion:

If a body moves in an irregular manner, its motion is called random motion. e.g the flight of butterfly or motion of gas molecules.

2)      Rotatory / Circular Motion:

When a body rotates as a whole around a fixed axis, is called its rotatory motion. In fact, the particles of the body move in circle. OR The motion of a body in a circular path is called rotatory/circular motion.

Examples:

       Motion of wheel of a cycle, the hands of a clock, the wings of a turning fan and motion of the

       earth around its axis are examples of rotatory motion.

3)      Vibratory Motion:

The to and fro motion of an object about its mean position, repeated at regular intervals of a time is called vibratory or oscillatory motion.

Examples:

        Vibration of a pendulum, the oscillation of a mass attached to an elastic spring, motion of swing

        and the vibration of a plucked violin string.

   NOTE:

The motion of a body can be translatory, rotatory, vibratory or any combination of the three at the

same tine. e.g The motion of a cricket ball can have translatory as well as spin ( rotatory) motion.

The atoms/ molecules of gas can vibrate, rotate on its axis and at the same time can move freely

in its container.