Question

In the above problem, if a push of 5 N is applied on the
lighter mass, the force exerted by the lighter mass on the
heavier mass will be
(a) 5 N
(b) 4N
(c)2N
(d) None of the above
​

Answer 1

Answer:

none of the above......

Answer 2

If a force of 5N is applied on the lighter mass, the force exerted by the lighter mass on the heavier mass will also be 5N.

• From Newton's third law of motion, we know that for every action, there will be an equal and opposite reaction.
• Here, the heavier mass applies 5N to the lighter mass.
• So the lighter mass will also exert 5N on the heavier mass but in the opposite direction.
• Although the effect of the force will depend on the mass of the objects but the magnitude and direction of force are independent of their mass.