Question

To verify the third law of motion using two spring balances​

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

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.

Answer 2

Explanation:

lock the hooks of the spring balances into each other and attach one of them to a rigid support.

pull the other one using some amount of force.

You will observe that both the balances show equal magnitude of weight which is nothing but a force

This proves the third law of motion which states that every action has an equal and opposite reaction