AEM 2021 Lecture Notes - Lecture 17: Pseudoephedrine, Statics, Significant Figures
17 May 2017
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Document Summary
Statics and dynamics: the study of mechanics of particles and rigid bodies. Particles: simplified version of (rigid) body as a single point (points will not change shape). Particles are a special type of rigid body. Statics: the study of forces on bodies (rigid or particle) at rest. Dynamics: the study of how forces cause bodies to move. Position coordinates ( n coordinates for n dimensions x,y,z) Force (action of one body on another- push or pull) n. First law: n1, second law: n2 or nsl (f=ma), third law: n3 or ntl. We will focus mainly on the second law in the second half of the course. Si: meters m, seconds s, kilograms kg, newtons n. Uscs: feet ft, seconds s, slug, pounds lb (force not mass!) Weight is a force measured in newtons, mass is kilograms. Standard gravity=9. 80665 m/s or 32. 1740 ft/s in peasant units. Results cannot be more accurate that data (no more significant digits).
