Question

how do you experimentally prove that action and reaction forces are acting on two different objects

Answer 1

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 divisionLeast count of the spring balance A=………NLeast count of the spring balance B =…………………N
No. of observations-

Reading of  B (Second spring balance) when force applied (N)-

Reading of  A (First spring balance) when force applied (N)-

Difference in reading of A and B (N)-
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.

 



 

 

 

 

 

 

 

 

 

 

 

 

Answer 2

Aim:

To prove that action and reaction forces are acting on two different objects.

Materials Required: Test tube, Rubber cork,Bunsen Burner, Stand and Thread

Procedure:
-->Take a test tube and put small amount of water in it.
-->Close the mouth of the test tube with cork .
--->Now suspend the test tube freely with the help of two strings.
--->Heat the test tube with a Bunsen burner until water vaporizes and cork blows out.

Observation:
---> Due to the increase of water  vapour pressure inside test tube the cork blows in the forward direction which is action force.
---> Because of action force the test tube recoils back due to reaction force.

Conclusion :
Thus we can conclude that action and reaction forces are acting on two different objects