Newton's Laws and Equation of Motion
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چکیده
Newton’s laws consist of “the law of inertia”, “the law of motion”, and “the law of action and reaction.” The first law depicts that if there is no external effect, an object must be still or moving at a constant velocity, which leads to a concept of the net force. The second law quantifies the force in terms of acceleration and mass of the object. The third law illustrates the existence of the counter force which is related to normal forces and tension, etc. Solving the equation of motion involves these three principles, and we have the general expression, ΣF=ma, (The net force on one object with one direction is equal to the mass of the object times its acceleration based on the physical conditions.), for each object and each axis. This also needs consideration of the vector properties of forces. The dimension of force is [M][L][T]. The SI unit of force is newtons (N).
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تاریخ انتشار 2013