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AP Physics 1 - Rotation

AP Physics 1 - Rotation

memorize.aimemorize.ai (lvl 286)
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Section 1

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How do you calculate total kinetic energy for an object that is rotating about its axis and moving linearly?

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Physics
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Last updated

7 years ago

Date created

Mar 1, 2020

Cards (22)

Section 1

(22 cards)

How do you calculate total kinetic energy for an object that is rotating about its axis and moving linearly?

Front

Sum of : Translational KE (1/2 mv^2 ) + Rotational KE (1/2 Iw^2)

Back

2 pi

Front

The value you must multiply by to change revolutions to radians.

Back

Translational Motion

Front

Type of motion where an object starts at one point and moves to another.

Back

I (hollow sphere or ring)

Front

I = 2/3 MR^2

Back

Moment of Inertia

Front

The rotational equivalent of mass, I

Back

I (cylinder or disk)

Front

I = 1/2 MR^2

Back

I (Rotating rod at center)

Front

I = 1/12 ML^2

Back

Rotational Motion

Front

Type of motion where an object "spins in place".

Back

What is the slope of a graph of angular velocity vs time?

Front

angular acceleration

Back

What is the slope of a graph of angular position vs time?

Front

angular velocity

Back

Law of Conservation of Angular Momentum

Front

Angular Momentum is always conserved.

Back

Where is the greatest angular Kinetic Energy for a spinning object with changing radius?

Front

Position where angular speed is highest (smallest radius)

Back

Angular Velocity

Front

A speed of rotation measured in radians/second.

Back

I (solid sphere)

Front

I = 2/5 MR^2

Back

Where is the greatest Moment of Inertia for a spinning object with changing radius?

Front

Position where radius is the greatest

Back

Frequency

Front

The number of rpm, revolutions per minute. Can also be rotations or turns per minute or second.

Back

Angular Acceleration

Front

The rate of change of angular velocity in radians/second squared.

Back

If radius of a rotating object decreases, what happens?

Front

Angular speed increases

Back

Angular Momentum

Front

The rotational equivalent of linear momentum. A product of moment of inertia and angular velocity, L

Back

Rotation Fact

Front

Every point on a rotating, rigid surface has the same angular velocity.

Back

Angular Displacement

Front

A measure of the amount of radians that an object rotates through.

Back

I (Rotating rod at end)

Front

I = 1/3 ML^2

Back