Varghese, Nainan K.
January 09, 2014
Effort, Force, Work, Inertia, Motion, ‘Centrifugal force’, Centripetal effort, Momentum
All natural (inertial) motions are in straight lines. Rotating motion or motion in circular path is the result of simultaneous straight-line motions of 3D matter-particles of a macro body, in different directions at differing linear speeds, appropriate to their locations in it. A macro body, moving in circular path, is under a constant inward effort. It simultaneously has two linear motions; one linear (centripetal) motion due to centripetal effort towards centre of circular path and another linear motion due its momentum in a direction deflected outward from tangent to circular path. Outward component of linear motion gives rise to assumption of imaginary ‘centrifugal force’. Centripetal motion not only compensates outward component of linear motion but also deflects direction of linear motion inward. Explanations on rotary motion with respect to absolute (inertial) reference frame can give real parameters without use of imaginary entities. Work, invested by external effort about a macro body, continues to act even after cessation of external effort, until it is stabilized and macro body’s motion attains steady state. Phenomenon of inertial delay operates not only during application of external effort but also during its cessation. Ignoring this fact caused the assumption that direction of instantaneous linear motion of a macro body, moving in a circular path, is tangential to its path.