Pulling two spring balances in Laws Of Motion – Class 9 Science Experiment

Chapter Name: Laws Of Motion

Activity Name: Pulling two spring balances in Laws Of Motion

Activity Description:

Required Items:

1. Two spring balances of equal calibrations
2. Setup to hold the spring balances in place

Step by Step Procedure:

1. Take two spring balances of equal calibrations.
2. Set up the experiment by connecting the two spring balances together as shown in Figure 14.
3. Make sure the spring balances are secured and can be pulled in opposite directions without any obstructions.
4. Pull the spring balances in opposite directions as indicated in Figure 14.
5. Observe and record the readings displayed on both spring balances.

Experiment Observations:

1. The readings in the spring balances will show a force being applied in opposite directions.
2. The readings on the two spring balances will be the same.

Precautions:

• Ensure that the spring balances are of equal calibrations to get accurate results.
• Set up the experiment securely to prevent any accidents or misalignment.
• Be cautious while pulling the spring balances to avoid sudden jerks or overloading.

Lesson Learnt from Experiment:

The experiment demonstrates that when two spring balances of equal calibrations are connected and pulled in opposite directions, they will show the same readings.

This observation aligns with Newton’s third law of motion, which states that for every action, there is an equal and opposite reaction. The forces applied in opposite directions on the spring balances result in equal and opposite readings, reaffirming the conservation of momentum.