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A rotating body about the fixed point is subjected by inertial torques


The planar rigid-body motion of a body is a classical topic of textbooks of engineering mechanics. This planar rigid-body motion considers its rotation about an axis and a curvilinear motion. The textbooks of classical mechanics describe only the radial acceleration and centrifugal force acting on the rotating body. Detailed analysis of the rotation of a body about a fixed point discovered the action of the two inertial torques and the angular acceleration. This inertial torques acting on the rotating bodies are not considered by lecturers, engineers, and practitioners. None of the less, this inertial torques are fundamental as the centrifugal force acting on the rotating body and should be computed in engineering with the aim to enhance the quality of machine work. This manuscript presents the physical interpretation of the angular acceleration of a rotating body that generates the two inertial torques acting about its center mass and fixed point.


rotating body, radial and angular acceleration, inertial force and torque