Question

two 10kg bodies are attached to a spring balance then the reading of spring balance will be

Answer 1

Answer: 10 kg

Explanation:

It’s an action-reaction force

The tension in the string is 10g

Hence the spring balance shows 10 kg

Don’t think that both are equal weights so the spring balance shows zero reading.

Cheers!

Answer 2

Answer: When two 10kg bodies are attached to a spring balance, then the reading of the spring balance will be 10.

Explanation:

1. Spring balance works on action reaction principle.

2. The force at the two ends will be equal in magnitude all the time. So the resultant magnitude will be same as weight applied.

3. Hence, according to Newton's third law, the reading shown by the spring balance will be 10.