ME 361 Lecture 25: ME 361 Lecture 25
13 Nov 2017
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What is dynamics? physical system --> mathematical representation --> analysis --> interpret the result (i. e. recognize when answer is wrong) Dynamics is the study of motion and forces that cause motion. Review (cid:12254) (cid:12254) (cid:12254) (cid:12254) (cid:12254) (cid:12254) (cid:12254) Be organized, work through problems using a process. Pay attention, sit close to see board study in a group quizzes in wednesday"s. Example 2: hanging a sign that is 100 lbs and 1ft wide. Steps (cid:12254) (cid:12254) (cid:12254) (cid:12254: label important points / distances, draw fbd, draw an origin and coordinate systems, use equilibrium. We can de ne acceleration as a function of time, position, velocity, or all three (i. e. Making sibling push car, function of time would be faster for motivational speech, function of position would vary with slope of road) Each starts at time t = 0, at x = 0, and v = 1 m/s. Three special cases: constant velocity: v = v .
