Kinesiology 2241A/B Lecture Notes - Lecture 12: Fictitious Force, Dynamic Equilibrium, Vestibular System
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30 Oct 2018
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Static equilibrium means there is no acceleration like in this isometric position- nothing is really moving. And the center of mass is not accelerating. Dynamic equilibrium means there is acceleration like in this sprint start. In physics equilibrium means all forces and torques add to zero. How can we get it into equilibrium. Equilibrium always is 0 and you are always in equilibrium. We feel this inertial force (resistance our body is putting up to be accelerated. When you feel the pull backwards- its the inertial force 6. Inertial forces act to oppose any accelerations of the center of mass. These are the forces that you feel when you are performing a task with acceleration. Like in this runner who is turning to his left, he feels the inertial force downward and to his right. The opposite of the acceleration of his center of mass. He is in dynamic equilibrium and is accelerating - going in opposite direction.
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