Observing the direction of motion of a body in Motion – Class 9 Science Experiment

Chapter Name: Motion

Activity Name: Observing the direction of motion of a body in Motion

Activity Description:

In this experiment, we will observe the direction of motion of a small object whirling on the end of a string in a horizontal plane. The objective is to understand the direction of the object’s motion when it is released from the string at different points on the circular path.

Required Items:

  1. Small object (e.g., a small ball or a weight)
  2. String
  3. Circular path (you can use a pencil to draw a circle on a flat surface)

Step by Step Procedure:

  1. Attach the small object to one end of the string securely.
  2. Hold the other end of the string and carefully whirl the small object in a horizontal plane, creating a circular path.
  3. While the object is whirling on the string, release it at different points on the circular path.
  4. Observe the direction of motion of the object after it has been released from the string.

Experiment Observations:

  1. The object moves on a straight line along the tangent to the circle at the point where it was released.
  2. The direction of velocity of the object is tangent to its path at the point of interest.


  • Ensure that the object is securely attached to the string to prevent accidents.
  • Whirl the object gently to avoid any damage or injury.
  • Perform the experiment on a smooth and flat surface to get accurate observations.

Lesson Learnt from Experiment:

The experiment demonstrates that when a body is released from a circular path, it moves in a straight line along the tangent to the circle at the point of release. This observation helps us understand the concept of velocity and its direction in the context of circular motion.

Science Experiment Kits for Kids

Photo Title Price Buy
Einstein Box Junior...image Einstein Box Junior Science Gift Set | 2-in-1 Set of My First Science Kit & Slime Kit for 4-6-8 Year Olds| Birthday Gift for Boys & Girls ₹1,199.00
ButterflyEdufields 20+ Science...image ButterflyEdufields 20+ Science Kit For Kids | STEM Projects birthday gift For Boys and Girls Ages 7-8-10-12 |DIY Educational & Learning Experiment Toys for 7 To 12 Year Olds | Build 20+ Motor Machines ₹1,599.00
The Little Ones...image The Little Ones Science Kit - Science experiment kit for kids 6-8-10-12 years old,educational learning toys,Best gift for boys&girls,chemistry kit,science project[Complete science kit- 100+experiment]
WitBlox AI Artificial...image WitBlox AI Artificial Intelligence Robotic Science Kit for 101+ Project 137 Part 8 Yrs+, Interlocking Bricks, Electronic Sensor & Circuits to create Logic 2 Free Live Classes Gift Toy for Boys & Girls ₹3,499.00
Avishkaar Robotics Advanced...image Avishkaar Robotics Advanced Kit|150-In-1 DIY Stem Metal Kit|Multicolor|150+ Parts|Learn Robotics|Coding & Mechanical Design|for Kids Aged 10-14|Made in India|Educational DIY Stem Kit|Made in India ₹10,499.00
My Science Lab...image My Science Lab Ultimate Science Experiment Kit for Kids Age 6-14 | STEM Toys | Physics Kit Set | Science & Fun 5-in-1 Projects | School Science Kit | Best Educational Birthday Gift Toys for Boys and Girls

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *