Question

(b)
The diagram shows two spring balances connected together.
A
B
0 1 2 3 4 5 6 7 8 9
1
Nou
IN
1.000.000 N
5 8 7 6 5 4 3 2 1 0
0
(i)What do you observe when a force is applied through the
free end of spring balance A?
(ii)What do you conclude from the answer given by you in the
section b(i)?
​

Answer 1

Answer:

i) The readings in both spring balance is equal or say same.

(ii) It can be concluded from the above answer that when spring balance A is pulled then at the same time B spring balance is also pushed in same direction in which A , giving some reading to balance B . The same reading is seen in balance A as that of balance B because the spring balance B also pulls the spring balance A by equal force in opposite direction.

This demonstrates Newton's third law that "to every action there is an equal and opposite reaction".