The spool has mass, m, and a radius of gyration kG. An inextensible cord is attached to the wall at A. The cord is wound around the radius R and the outer radius 2R. The coefficient of friction between the spool and the ground is mu.  What it the critical force, Fcrit (force required to cause motion) applied at point B? If force= 2Fcrit what is the linear acceleration of the center of mass? If force= 2Fcrit what is the tension in cord AC?

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Basic Terminology in Mechanics

The area of science and mathematics concerned the motion of the objects, the relation between the force matter, and motion if specified. Forces exerted over the objects result in displacements or changes in the position of an object concerning its environment. This branch of physics keeps its roots in Ancient Greece in the form of the scripts of Aristotle and Archimedes.