Please enable JavaScript.
Coggle requires JavaScript to display documents.
CHAPTER 9: ROTATIONAL MOTION - Coggle Diagram
CHAPTER 9: ROTATIONAL MOTION
Angular Quantities
Angular displacement
:
Average angular velocity
:
Instantaneous angular velocity
:
Angular acceleration
:
Instantaneous Acceleration
:
Every point on a rotating body has an angular velocity and a linear velocity.
object further from the axis of rotation moves faster.
Frequency
number of complete revolution per second.
Period
is the time one revolution.
Constant Angular Acceleration
Torque
a measure of the force that can cause an object to rotate about an axis.
torque is what causes an object to acquire angular acceleration.
vector quantity
Defined as:
Rotational Kinetic Energy
Kinetic Energy of a rotating objcect:
Object that has boh translation and rotational kinetic energy:
Work done by torque:
Moments of Inertia
quantitative measure of the rotational inertia of a body
The axis may be internal or external and may or may not be fixed.
The perpendicular- axis theorem(validfor flat objetcs):
Rotational Inertia
a property of any object which can be rotated.
The rotational inertia of an object depends not only on its mass but also the location of its axisof rotation.
