Lesson 502 of 1524
Rotational Motion and Angular Momentum
The kinematics of rotational motion describes the relationships among rotation angle, angular velocity, angular acceleration, and time
Practice this chapterThe kinematics of rotational motion describes the relationships among rotation angle, angular velocity, angular acceleration, and time Linear or tangential acceleration refers to changes in the magnitude of velocity but not its direction, given as a t = Δ v Δ t
The radius r is constant for circular motion, and so Δ rω = r Δ ω .
angular momentum — the product of moment of inertia and angular velocity. kinematics of rotational motion — describes the relationships among rotation angle, angular velocity, angular acceleration, and time. tangential acceleration — the acceleration in a direction tangent to the circle at the point of interest in circular motion. radius r — constant for circular motion, and so Δ rω = r Δ ω.
Worked example
What does “angular momentum” mean in Rotational Motion and Angular Momentum?
- 1Use the wording this chapter gives for angular momentum.
- 2The book says: the product of moment of inertia and angular velocity.
- 3Do not use the meaning of kinematics of rotational motion. That term means describes the relationships among rotation angle, angular velocity, angular acceleration, and time.
Result: the product of moment of inertia and angular velocity
Why. That is the meaning this chapter gives for angular momentum.
Do not swap angular momentum and kinematics of rotational motion. angular momentum means the product of moment of inertia and angular velocity. kinematics of rotational motion means describes the relationships among rotation angle, angular velocity, angular acceleration, and time.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.