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Unit 7

7.0 Unit 7 Overview: Torque and Rotational Motion

1 min readβ€’june 8, 2020

peter57616

Peter Apps


AP Physics 1 🎑

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Up until this point in the course, all of the motion covered has been described in terms of linear terms (Forces, velocities, displacements, etc.) However a great deal of motion in the world isn’t about an object traveling anywhere, but instead rotating around a fixed axis (wheels, Merry-Go-Round, record/CD/DVD players).
https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2Fgiphy.gif?alt=media&token=3514ce07-0f54-4b4c-aef1-0cf5aca1cf9b

Image courtesy of Giphy.

This unit serves looks at the concepts already covered in units 1-6 and applies them to a rotating object instead of an object moving in a straight line. These topics will account for ~10-16% of the AP exam questions and will take approximately 12-17 45 minute class periods to cover.

Applicable Big Ideas

  • Big Idea #3: Force Interactions - The interactions of an object with other objects can be described by forces.
  • Big Idea #4: Change - Interactions between systems can result in changes in those systems.
  • Big Idea #5: Conservation - Changes that occur as a result of interactions are constrained by conservation laws.

Key Concepts πŸ”‘

  • Angular Displacement (πœƒ)
  • Angular Velocity (πœ”)
  • Angular Acceleration (𝛼)
  • Period (T)
  • Torque (𝜏)
  • Moment of Inertia (I)
  • Rotational Kinetic Energy (Krot)
  • Angular Momentum (L)

Key Equations πŸ—

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πŸŽ₯Watch: AP Physics 1 - Unit 7 Streams

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