Kinesiology 2241A/B Lecture Notes - Lecture 11: Fictitious Force, Dynamic Equilibrium, Length Overall

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Thomas Richard Jenkyn

Document Summary

In physics equilibrium = force + torques add to zero. Physics + mathematics equilibrium = adds to 0. Force pushing on hands from wall, equal opposite on legs. Equilibrium = all forces + torques add to zero. Dynamic equilibrium = there is acceleration (sprinter starting) Newton"s 2nd law - f = m x a --> w + 2f = m x a. Mass x acceleration, in acceleration forward he isnt in equilibrium. Move unbalanced m x a to other side. W + 2f - m x a = 0. Now in dynamic equilibrium (founded from newton"s 2nd law) Still accelerating from starting blocks but changed the math. Weight + 2 foot forces, we need to subtract inertial force. Inertial forces act to oppose acceleration of center of mass. Runner turning to l - feels inertial force downward + to his r (opposite of acceleration of com)