Lecture 5e - Texas Tech Physics & Astronomy

Inclined Plane Problems Tilted coordinate system: Convenient, but not necessary. Understand F = ma & how to resolve into x,y components in the tilted coordinate system!! By trigonometry:

FGx= FGsin() = mgsin() FGy= FGcos() = -mgcos() FG = mg You MUST understand this case to

understand the case with friction!! By geometry, the 2 angles marked are the same! Example Is the normal force FN equal & opposite to the weight FG?

NO!!!!!!!!!!!! F = ma Example x: mgsin Ff = ma y: FN - mgcos = 0 Friction: Ff = kFN NOTE:

FN = mgcos mg THE NORMAL FORCE IS NOT EQUAL TO THE WEIGHT!!!

Recently Viewed Presentations

  • Spirochete Diseases - Austin Community College

    Spirochete Diseases - Austin Community College

    Corkscrew motility Can be free living or parasitic Best-known are those which cause disease: Syphilis and Lyme's disease Morphology Have axial filaments, which are otherwise similar to bacterial flagella Filaments enable movement of bacterium by rotating in place Spirochete Diseases...
  • therapy GENERAL PSYCHOLOGY P R E S E

    therapy GENERAL PSYCHOLOGY P R E S E

    ECT (Electroconvulsive therapy) 1940-60. Todays for severe depression. two electrodes are placed on the scalp and a moderately intense electric current is passed between them for about half a second.
  • The Whole Language Movement 1980s-1990s ANDREA MOONEY A

    The Whole Language Movement 1980s-1990s ANDREA MOONEY A

    1. semantic cues: cues about meaning or what makes sense in the sentence or story. 2. graphophonic cues: cues about the letters and their sounds . 3. syntactic cues: cues about the grammar of the sentence (Walker, 2008, p. 42-3)...
  • OCR Cambridge Nationals in ICT (Level 1/2) R004

    OCR Cambridge Nationals in ICT (Level 1/2) R004

    OCR Cambridge Nationals in ICT (Level 1/2) R004 Handling Data Using Databases The database is probably the most widely used computer program. What is a database? The benefit of storing data electronically is the ability to search and retrieve information...
  • Object-Oriented Analysis and Design

    Object-Oriented Analysis and Design

    Delegate Model Implementation. General steps: Instantiate the Model - does not care about UI. Instantiate Delegate with reference to the Model. How it works: Delegate recognizes event (from UI) and executes appropriate handler. Delegate accesses Model, possibly updates it. If...
  • Mannerism - Woodbridge Township School District

    Mannerism - Woodbridge Township School District

    Late Renaissance [Pre-Baroque]. Art was at an impasse after the perfection and harmony of the Renaissance. Antithetical to the principles of the High Renaissance. From the Italian . de maneria. A work of art done in the artist's characteristic "touch"...
  • Top Tier Objectives - University of South Carolina

    Top Tier Objectives - University of South Carolina

    Graduate students: Rob Bickhart, Kara Godsey, Alex Hanna, Megan Hoover, Emily Murawski. Energize: An interactive evaluation tool for engaging the general public with energy decision making. This work is supported by DOE NEUP award number DE-NE0008568.
  • Mapping of the Airspace Systems Program to the

    Mapping of the Airspace Systems Program to the

    c. Cockpit display of traffic information to conduct visual operations in instrument meteorological conditions. d. Increased capacity at non-towered airports in instrument meteorological conditions. e. Low visibility air and ground movements to CAT-II/III minima with minimal ground infrastructure. a. Reduced...