Angular Kinematics ( Test 2 )

Question 1

What is Angular Kinematics

Answer 1

Consideration of angular motion ( Rotation ) without regard to torque

Question 2

What is the angular equivalent to Position

Answer 2

Angle ( θ )

Question 3

What is the angular equivalent to displacement

Answer 3

Angular displacement ( ∆θ )

Question 4

What is the angular equivalent to velocity

Answer 4

Angular velocity ( ω = ∆θ/∆t)

Question 5

What is the angular equivalent to acceleration

Answer 5

angular acceleration ( α = ∆ω/∆t )

Question 6

What is an angle

Answer 6

description of the orientation two lines or segments have with each other

Question 7

What is an absolute angle

Answer 7

describes the orientation of a body segment relative to a relatively fixed segment ( the earth )

Question 8

What is a relative angle

Answer 8

describes the orientation of a body segment relative to a dynamic (moving) segment. ( another body segment )

Question 9

how do we find linear distance

Answer 9

l = θr

Question 10

How do we find linear speed

Answer 10

v = ωr

Question 11

on an angle x time graph how do we find the angular veloctiy

Answer 11

it is equal to the slope of the line

Question 12

on an angular velocity x time graph how do we find the angular acceleration

Answer 12

it is equal to the slope of the line

Question 13

how are angular and linear acceleration linked

Answer 13

when there is an increase in angular velocity of a point on an object, there is also an increase of linear velocity for that same point

Question 14

what are the two components of linear acceleration for a rotating object

Answer 14

1. tangential

2. Centripital

Question 15

What is tangential ( at )

Answer 15

the component of linear acceleration that is tangential to the circular path of the rotating object.

Question 16

what happens when tangential acceleration = 0

Answer 16

That means that the linear speed of the object is constant

Question 17

how is tangential acceleration related to angular acceleration

Answer 17

tangential acceleration = αr

Question 18

what happens to angular acceleration as tangential acceleration occurs

Answer 18

angular acceleration also occurs

Question 19

What happens to angular acceleration when no tangential acceleration occurs

Answer 19

no angular acceleration

Question 20

What happens to linear acceleration when no tangential acceleration occurs

Answer 20

still have linear acceleration because it is still changing direction

Question 21

What is centripetal acceleration (ac)

Answer 21

the component of linear acceleration that is directed toward the center of rotation, it is related to the change in direction of the rotating object