All Flashcards
Define angular displacement.
The angle in radians through which an object rotates around an axis.
Define average angular velocity.
The rate at which angular position changes with time.
Define average angular acceleration.
The rate at which angular velocity changes with time.
What are the units for angular velocity?
Radians per second (rad/s).
What are the units for angular acceleration?
Radians per second squared (rad/s²).
What is the effect of applying a constant frictional torque to a rotating disk?
The disk experiences angular deceleration and eventually comes to rest.
What is the effect of a constant angular acceleration on an object initially at rest?
The object's angular velocity increases linearly with time.
What is the effect of increasing the radius of a rotating object (while keeping mass and angular velocity constant) on its moment of inertia?
The moment of inertia increases.
What is the effect of increasing angular velocity on angular displacement?
For a given time interval, the angular displacement increases.
What happens if the angular acceleration is zero?
The angular velocity remains constant.
In the context of angular displacement, what does the angle θ represent?
θ represents the angular displacement, the angle through which an object rotates.
In the context of angular displacement, what does the arc length 's' represent?
The arc length 's' represents the distance traveled along the circular path due to the rotation.
In the context of angular displacement, what does the radius 'r' represent?
The radius 'r' represents the distance from the axis of rotation to the point where the displacement is measured.