Question

its any defect in newton third law???

Answer 1

Newton's laws written in different waysThe italic is a translation of Newton's own words, the roman text is my paraphrasing.Newton's first law:Every body perseveres in its state of rest, or of uniform motion in aright line, unless it is compelled to change that state by forces impressed thereon.If the total force acting on a body is zero, then it travels in a straight line at constant speed. ie its velocity is constant and its acceleration is zero.Newton's second law:The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.A nett force F accelerates a body in the direction of the force. To any body may be ascribed a scalar constant, its mass m, such that the acceleration a produced in two bodies by a given force is inversely proportional to their masses, ie, for a given F, a2/a1= m1/m2.Newton's third law:To every action there isalways opposed an equal and opposite reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.Forces always come in pairs, and the sum of the pair is zero. (More about thisbelow.)

Answer 2

i think no. it is correct..