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For more information, please see full course syllabus of AP Physics B
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Lecture Comments (2)

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Post by singtong saipin on September 27, 2012

A Crate is give an initial speed of 3.0m/s up the 25.0 degree Plane (a) How far up the plane will it go? (b)how much time elapses before it return to its starting point Assume K=0.17

Related Articles:

Applications of Newton's Laws, Part 1: Inclines

  • For an object on a frictionless incline making an angle theta with the horizontal, the acceleration is g*sin(theta) and is directed down the incline.
  • On a rough incline, the force of friction always opposes the motion. The total acceleration for motion up a rough incline is different that the acceleration for motion down the incline.

Applications of Newton's Laws, Part 1: Inclines

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Acceleration on a Frictionless Incline 0:35
    • Force Action on the Object(mg)
    • Net Force Acting on the Object
    • Acceleration Perpendicular to Incline
    • Incline is Horizontal Surface
    • Example: Object on an Inclined Surface
  • Rough Inclines and Static Friction 20:23
    • Box Sitting on a Rough Incline
    • Maximum Values of Static Friction
    • Coefficient of Static Friction
  • Acceleration on a Rough Incline 29:00
    • Kinetic Friction on Rough Incline
    • Object Moving up the Incline
    • Net force on the Object
  • Example: Time to Reach the Bottom of an Incline 41:50
    • Displacement is 5m Down the Incline
    • Velocity of the Object Down the Incline
  • Extra Example 1: Bottom of Incline
  • Extra Example 2: Incline with Initial Velocity
  • Extra Example 3: Moving Down an Incline