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AP Physics 1

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Unit 7

# 7.0 Unit 7 Overview: Torque and Rotational Motion

1 min readβ’june 8, 2020

Peter Apps

### AP Physics 1Β π‘

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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 isnβt about an object traveling anywhere, but instead rotating around a fixed axis (wheels, Merry-Go-Round, record/CD/DVD players).

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 π

• Angular Displacement (π)
• Angular Velocity (π)
• Angular Acceleration (πΌ)
• Period (T)
• Torque (π)
• Moment of Inertia (I)
• Rotational Kinetic Energy (Krot)
• Angular Momentum (L)

### Key Equations π

π₯Watch: AP Physics 1 - Unit 7 Streams

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πUnit 10: Mechanical Waves & Sound
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π‘Unit 7: Torque & Rotational Motion
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