Acceleration and velocity of an object in Motion – Class 9 Science Experiment
Chapter Name: Motion
Activity Name: Acceleration and velocity of an object in Motion
Activity Description:
In this experiment, the aim is to determine the acceleration and velocity of an object as it moves down an inclined track. Additionally, a graph will be plotted to show the relationship between distance and time.
The experiment involves releasing a glass marble from various distances on a plastic tube track and recording the time it takes to reach the bottom and strike a steel plate.
Required Items:
- Glass marbles
- Identical books
- Digital clock
- Long plastic tubes
- Steel plate
Step by Step Procedure:
- Take a long plastic tube and cut it in half along the length to create two tracks.
- Mark readings in centimeters along each track.
- Set up the track by placing one end on books to create an incline, with the other end touching the floor.
- Place a steel plate on the floor at the bottom of the track and consider this position as the zero distance point.
- Select a marble of suitable size for the experiment.
- Release the marble from a specific distance, for example, 40cm, and simultaneously start the digital clock.
- The marble will move down the track and hit the steel plate, producing a sound. Stop the digital clock when the sound is heard.
- Record the time taken by the marble to reach the bottom and strike the plate in a table.
- Repeat the experiment 2 to 3 times for the same distance and note down the respective times in the table.
- Repeat the entire experiment for various other distances as well.
Experiment Observations:
- Record the time taken by the marble to travel the specified distance in each trial.
Precautions:
- Ensure the track is securely placed on the books and the floor to prevent any accidents.
- Use identical marbles and tracks for consistent results.
- Make sure the marble moves freely without any obstructions or interference during its journey down the track.
- Perform the experiment on a smooth and even surface to minimize external factors affecting the results.
Lesson Learnt from Experiment:
This experiment helps understand the concepts of acceleration and velocity of an object in motion, particularly when it moves along an inclined track. By plotting a graph between distance and time, students can visualize the relationship and gain insights into the object’s motion.
