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For more information, please see full course syllabus of AP Physics C/Mechanics
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Lecture Comments (1)

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Post by paul jordan on June 16, 2011

it seems vertical forces mg and Tcos(theta) are not cancelling--the bob is moving up as it describes an arc.

Accelerating Frames

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
  • What Does a Scale Measure 0:11
    • Example: Elevator on a Scale
    • Normal Force
  • Apparent Weight in an Elevator 7:42
    • Example: Elevator Starts Moving Upwards
    • Net Force (Newton's Second Law)
    • Apparent Weight
  • Pendulum in an Accelerating Train 15:58
    • Example: Object Hanging on the Ceiling of a Train
    • Angle In terms of Increased Acceleration
  • Mass and Spring in an Accelerating Truck 23:40
    • Example: Spring on a Stationary Truck
    • Surface of Truck is Frictionless
    • Spring is Stretched by distance X
  • Cup of Coffee 29:55
    • Example: Moving Train and Stationary Objects inside Train
    • Train Moving With Acceleration A
    • Force of Static Friction Acting on Cup
  • Extra Example 1: Train Slows with Pendulum
  • Extra Example 2: Person in Elevator Releases Object
  • Extra Example 3: Hanging Object in Elevator