Procedure for doing real Lab:
- Take two similar spring balances of different ranges, say A and B.
- Note the least count of the spring balances.
- Attach the ring of spring balance A on a hook fixed in the wall and the spring balance B is attached to the hook of spring balance A.
- Hold the spring balances exactly horizontal to the table.
- Pull the ring of spring balance B gently.
- Observe and note the reading of both the spring balances.Repeat the experiment by applying different forces.
Procedure for doing simulator:
- Change the ‘Applied force’ slider and observe the reading on the two spring balances.
- Repeat the experiment by applying different forces.
- Click on the reset button for reset the experiment.
Observations:
- Least count of the spring balance = value of 1 small division
- Least count of the spring balance A=………N
- Least count of the spring balance B =…………………N
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No. of observations
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Reading of B (Second spring balance) when force applied (N)
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Reading of A (First spring balance) when force applied (N)
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Difference in reading of A and B (N)
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Result:
The readings on both the balances are the same in each case. Thus action and reaction forces are equal and opposite and act on two different bodies.
Precautions:
- Spring balance of different least count should be taken.
- The spring balance should be brought in elastic mode before doing the experiment.
- The second spring balance should not be pulled beyond its elastic limit.
- The reading of the spring balance should be taken without any parallax error.
