ROtational motion Flashcards
1
Q
inertia
A
- a measure of how much an object resists a change in velocity
- (the larger the inertia, the larger the applied force needed to change its velocity by a given amount)
2
Q
moment of inertia
A
- resistance to rotation
3
Q
what does moment of inertia depend on
A
mass and distance from the axis of rotation
4
Q
How is moment of inertia measured for an extended object
A
- adding up the individual moments of inertia of each point mass
5
Q
angular displace
A
the angle through which a point has been rotated
6
Q
angular velocity
A
vector quantity desribing the angle a point rotates through per second
rate of change of angular dispalcement
7
Q
angular speed
A
magnitude of angular velocity
8
Q
angular acceleration
A
rate of change of angular acceleration
9
Q
at constant angular acceleration, what is the shape of the curve for a angular displacement - time graph and a angular velocity - time graph
A
- angular displacement
- curve
- displacement is proportional to t2
- angular velocity
- straight line
