Question

Write the difference between the revolutionary motion and rotatory motion. Give one example for each.

Answer 1

Hint
The motion of the object around a point along the circular path is called revolutionary motion. The motion of all the particles about a fixed axis is called the rotational motion. The particles lying on the axis remain at rest. The motion of the particles in rotational motion and motion of the object in revolutionary motion repeats itself after a particular duration, called the time-period of motion.

Complete step by step answer
Let an object is moving along the circular path with a constant distance from a fixed position. The fixed position is called the center of the circular path, and the motion of the object is called revolutionary motion. The object moving around the fixed position in a circular path completes each motion's revolution in a certain duration. This certain duration is called the revolution-period of the revolutionary movement. The motion of the Earth in the sun's orbit is an example of the revolutionary motion. The number of days in which the Earth completes one revolution of the sun is called the Earth's revolution period.
If the particles or objects rotate around a fixed-line along the circular path, then the particles or objects' motion is called the rotational motion. All the particles or objects except those lie on the fixed-line passes from a particular position. This duration is called the time-period of the particles or objects around the axis of the path. The earth's movement about its axis is the example of the rotational motion. The completes its one rotation about its axis in twenty-four-hour.

Note
Remember that the object or particle's movement about a point is the revolution, and the particle or object's movement about an axis is the rotational motion. The whole body is assumed as an object in the case of a revolution phenomenon, while all particles except those lying on the axis are analyzed in the case of rotational motion.