Genrl Phys Mech Snd
Genrl Phys Mech Snd PHYSICS 125
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This 7 page Class Notes was uploaded by Lamont Barton on Thursday October 29, 2015. The Class Notes belongs to PHYSICS 125 at University of Michigan taught by Andrew Tomasch in Fall. Since its upload, it has received 22 views. For similar materials see /class/231643/physics-125-university-of-michigan in Physics 2 at University of Michigan.
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Date Created: 10/29/15
Dr Andrew Tom asch Lectures 006 007 008 Prof Keith Riles 009 010 011 The Big Picture Primary Topics I Kinematics Dynamics I Energy and momentum I Fluids and Galileo Galiliei moving Oscillations and HfOW39dQ39 gathe im39ejc39h n i39cga l world Isaac Newton The description of motion Where is it Which direction is it moving How fast is it moving How fast is its speed changing Where will it be in the future Describing Motion How to describe motion Measurements gt Physical Quantities Requires units gt Systeme International SI u n its Thousand Hundredth CGS BE Length centimeter cm foot ft Mass gram 9 slug sl Time second 5 second 5 TWO uanftitiesa Scalars Scalars magnitude only ex radius R 10 cm Vectors magnitude and direction Arrow Ieng E magnitude of the vector Arrow direction E vector direction Example gt Displacement E d d mwto the right ta 1 magnitude direction VectorScalar Operations Vectors in 1 Dimension Do I have to write to the right all the time For 1dimensional vectors direction can be described with and 6 1 1mitotheright or did91m t d direction Diirect ian if you define magnl u e 2 E J E Vector Notation A 2 Vector quotAquot a Arrow denotes vector as E lVIagnitude length onl Positive Scalar X E x Component of 21 Vector E y Component of 21 Vector XX 2 AX 6 2 Unit Vector in x Direction vector form Ay EAyv 7 2 Unit Vector in y Direction X x Component of A Scalar Sign Denotes Direction V y Component of 21 Scalar Sign Denotes Direction lgx E Magnitude of 21X AX Positive Scalar lgy E Magnitude ofgyAy Positive Scalar We use and H signs to denote the direction of Vector Components r 39 re E ii Reselv ifng Vectzrs Into Components First use the trigonometry of right triangles and known angles to determine the magnitude length of each component 9 ASSi gn I or H signs to each Component based on the direction the arrow ef the veict39Or points Keep tgras k offthey icem39iipnje by tagging them With unit vectors or writing them orrdered airs 39of39hUMbe39IS or recording them in amiable 5 Vector AxB x y AB A
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