KINESIOL 2A03 Chapter Notes - Chapter 8: Mechanical Efficiency, Rotational Energy, Flor
15 Sep 2016
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Work of a (moment of) force i show much influence it has on the movement of a body. Work-energy theorem: work = mv2 f mv2 i. Terms on the right side: translational kinetic energies of the particle: involve motion (kinetic) and motion is linear (translational) Considering the force of gravity on a particle . W = (mgyf + mvf: (mgyi + mvi. 2: mgy terms = gravitational potential energies of the particle, bracketed quantities are the total mechanical energies of the particle. Consider work done by external moments of force. Particle has no width or length, so it can have no external moments of force or spin. Spin or rotational motion is affected by any external moments of force. W = e = ef ei = (mgyf + mv2. + icg 2 f: - (mgyi + mv2 i. Particles and bodies can possess two forms of mechanical energy: potential and kinetic.
