Question

Which of the following law, the magnitudes of the reactions are such that the applied loads are exactly counteracted?

1. Newton's first law
2. Newton's second law
3. Newton's third law
4. Ampere's force law

Answer 1

Correct Answer - Option 3 : Newton's third law

Explanation:

There are three laws of motion given by Newton:

1. Newton’s 1st law states that a body at rest or uniform motion will continue to be at rest or uniform motion until and unless a net external force acts on it.

2. Newton’s 2nd law states that the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

3. Newton’s 3rd law states that for every action there is an equal and opposite reaction.

Note:

According to the statement of Newton's 3rd law, the magnitudes of the reactions are such that the applied loads are exactly counteracted because if a load is applied then an equal and opposite reaction is generated to balance or counteract the effect of the applied load.