Question

If you are to conduct an experiment that will illustrate the third law of motion, how will your experiment setup be?

Answer 1

Newton's third law of motion Experiment :

AIM : To verify Newton's third law of motion.

MATERIALS REQUIRED : Two spring balances, one of 5 N and other of 10 N and a fixed iron stand.

PROCEDURE :

(1) Take the spring balance of 5 N. Attach one end of the spring balance to the iron stand and take the other spring balance of 10 N attached it to the hook of the first spring balance hold it exactly horizontal to the table for viewing the reading of both the balances.

(2) Apply a force of the second spring balance, note the reading of both the spring balances. Force exerted by second spring balance on the first that is F₂₁ is action force. At the same time the force exerted by the first spring balance on the second that is -F₁₂ is the reaction force.

(3) Tabulate the observations. Gently increase the force and and note down and your observation column.

(4) Repeat experiment for 4 to 5 times and tabulate the observations.

OBSERVATION : It is observed that both action force F₂₁ and reaction force -F₁₂ are equal and opposite. So, F₂₁ is equal to -F₁₂.

Hence, Newton's third law is verified.