ROTATIONAL MOTION Flashcards
Any objects that can rotate or spin.
Rotational Kinematics
It’s different from linear motion when objects simply moves forward in a straight line.
Rotational Kinematics
Translational kinematic quantities, such as displacement, velocity, and acceleration are directly analogous to traditional motion.
Rotational Kinematics
We call this angle of rotation (Φ) the— we denote as (theta) in symbol.
Angular displacement
Angle rotation symbol.
Φ
Arc length symbol.
S
Radius symbol.
r
Unit less since it is the ratio of two distances.
Angular Displacement
It is measured in radians
Angular Displacement
n linear motion, velocity (v) is defined as tga rate of change of the object’s position with respect to as frame if reference and time that is, v=Δx/Δt.
Angular Velocity
A rotating obejct is the rate at which the angular velocity changes with respect to time
Angular Acceleration
It is the change in the angular velocity, divided by the change in time.
Angular Acceleration
A vector that points in a direction along the rotation axis.
Angular Acceleration
The average of —- is the change in the angular velocity, divided by the change in time.
Angular Acceleration
The symbol α ia pronouced.
Alpha