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a2 physics engineering > ROtational motion > Flashcards

Flashcards in ROtational motion Deck (9)
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1

inertia

  • 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

moment of inertia

  • resistance to rotation

 

 

3

what does moment of inertia depend on

mass and distance from the axis of rotation

 

 

 

4

How is moment of inertia measured for an extended object

  • adding up the individual moments of inertia of each point mass

 

 

5

angular displace

the angle through which a point has been rotated

6

angular velocity

vector quantity desribing the angle a point rotates through per second

 

rate of change of angular dispalcement

 

 

 

7

angular speed

magnitude of angular velocity

8

angular acceleration

rate of change of angular acceleration

 

9

at constant angular acceleration, what is the shape of the curve for a angular displacement - time graph and a angular velocity - time graph

  • angular displacement
    • curve
    • displacement is proportional to t2
  • angular velocity 
    • straight line