Question

The to and fro motion of an object is called ___________ (rotatory/oscillatory) motion.

Answer 1

Oscillatory Motion or Vibratory Motion:

1. The to and fro motion of an object is called oscillatory motion.
2. If the oscillatory motion is very fast, it is called vibratory motion.
3. The movement of the piston in the engines of automobiles is also oscillatory.
4. The motion of the plucked string of a guitar is an example of vibratory motion.

Hence, The to and fro motion of an object is called oscillatory motion.