KIN121 Chapter Notes - Chapter 3: Cross Product, Right-Hand Rule, Glossary Of Video Game Terms
12 Dec 2014
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Lecture 3: kin121: free body diagrams (exams) Rigid body analysis: properties: non-deformable (can"t bend, deflect, squish, finite dimensions that never change, centre of mass (fixed, doesn"t move) Back muscles overly activated to compensate: pregnancy same issue but with a much smaller time frame, back muscle activation leading to different strains and tears. Coordinate systems review: stick to rectangular for kin121. Static******* major: parallelogram law (adding vectors, law of gravitation, newton"s 3 laws of motion. Law of reaction: transmissibility of forces. First law of motion: law of inertia, a body at rest (meaning won"t accelerate) tends to stay at rest unless unbalanced external force(s) act upon it, sum forces = 0, external forces. Muscle and ligament forces (but not always) Forces of rigid bodies: central (forces directed through com) only motion you can get is translation, eccentric not through com; this causes translation and rotation, general planar motion.
