Rotatory motion and Translatory motion in Motion and Time – Class 7 Science Experiment

Chapter Name: Motion and Time

Activity Name: Rotatory motion and Translatory motion in Motion and Time

Activity Description:

Rotatory motion and Translatory motion in Motion and Time - Class 7 Science Experiment

This experiment involves observing the motion of a table tennis ball when pushed on the surface of a table.

Required Items:

  1. Table tennis ball
  2. Table or flat surface

Step by Step Procedure:

  1. Place the table tennis ball on a flat surface, such as a table.
  2. Position yourself so you can easily push the ball with your finger.

Experiment Observations:

  1. When you push the ball on the surface of the table, it moves from one end to the other end. This is translatory motion.
  2. Additionally, all the particles of the ball also move along the direction of motion of the ball.


  1. Ensure the table or flat surface is clean and free from any obstructions to allow smooth motion of the ball.
  2. Use gentle force while pushing the ball to avoid any damage to the ball or the surface.

Lesson Learnt from Experiment:

In this experiment, we observed that the table tennis ball exhibits both translatory and rotatory motion. Translatory motion occurs as the ball moves from one end to the other end of the table.

Rotatory motion happens because each particle of the ball moves in a circular path about a particular line when the ball rolls on the surface. This experiment helps to understand the concept of different types of motion and how they can coexist in the same object.

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