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In the right-hand rule diagram for angular momentum, what do the fingers, curl, and thumb represent?

Fingers: direction of $\vec{r}$ , Curl: direction of $\vec{p}$ , Thumb: direction of $\vec{L}$

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In the right-hand rule diagram for angular momentum, what do the fingers, curl, and thumb represent?

Fingers: direction of $\vec{r}$ , Curl: direction of $\vec{p}$ , Thumb: direction of $\vec{L}$

Define angular momentum.

The 'rotational oomph' of an object; the tendency of a rotating object to keep rotating.

What is moment of inertia?

A measure of how hard it is to change an object's rotation.

Define angular velocity.

How fast an object is spinning.

What is torque?

Rotational force that causes things to rotate.

Define angular impulse.

The product of torque and time; what changes an object's angular momentum.

What is net torque?

The sum of all torques acting on an object.

What is angular acceleration?

The rate of change of angular velocity.

How do you calculate angular momentum for a rigid object rotating about a fixed axis?

Use the formula: $L = I\omega$ , where L is angular momentum, I is moment of inertia, and ω is angular velocity.

How do you calculate angular momentum about a point for a particle?

Use the cross product: $\vec{L} = \vec{r} \times \vec{p}$ , where $\vec{L}$ is angular momentum, $\vec{r}$ is the position vector, and $\vec{p}$ is linear momentum.

How do you determine angular impulse graphically?

Calculate the area under a torque vs. time graph.

How do you calculate the change in angular momentum?

Subtract the initial angular momentum from the final angular momentum: $\Delta L = L - L_0$ .

How to find net torque from an angular momentum vs time graph?

Find the slope of the angular momentum vs. time graph.

All Flashcards

In the right-hand rule diagram for angular momentum, what do the fingers, curl, and thumb represent?

Fingers: direction of $\vec{r}$ , Curl: direction of $\vec{p}$ , Thumb: direction of $\vec{L}$

Define angular momentum.

The 'rotational oomph' of an object; the tendency of a rotating object to keep rotating.

What is moment of inertia?

A measure of how hard it is to change an object's rotation.

Define angular velocity.

How fast an object is spinning.

What is torque?

Rotational force that causes things to rotate.

Define angular impulse.

The product of torque and time; what changes an object's angular momentum.

What is net torque?

The sum of all torques acting on an object.

What is angular acceleration?

The rate of change of angular velocity.

How do you calculate angular momentum for a rigid object rotating about a fixed axis?

Use the formula: $L = I\omega$ , where L is angular momentum, I is moment of inertia, and ω is angular velocity.

How do you calculate angular momentum about a point for a particle?

Use the cross product: $\vec{L} = \vec{r} \times \vec{p}$ , where $\vec{L}$ is angular momentum, $\vec{r}$ is the position vector, and $\vec{p}$ is linear momentum.

How do you determine angular impulse graphically?

Calculate the area under a torque vs. time graph.

How do you calculate the change in angular momentum?

Subtract the initial angular momentum from the final angular momentum: $\Delta L = L - L_0$ .

How to find net torque from an angular momentum vs time graph?

Find the slope of the angular momentum vs. time graph.