Question

Please explain why the following statement is true. If two external forces that are both equal in magnitude and opposite in direction act on the same object, the two forces can never be a Newton's third law pair.

Answer 1

Newton's Third Law: When two bodies interact, the force XX exerted by object B on object A is equal in magnitude and opposite in direction to the force exerted by object A on object B. Thus, each pair of forces is called a Newton’s third-law (N3L) pair.