Angular Kinematics - 2

Question 1

The angular displacement of all points along a rotating object is…

Answer 1

The same regardless of how large the radius of the circle is

Question 2

The angular displacement of an object measured anywhere along thelength of the object is always…

Answer 2

the same

Question 3

What does the actual linear path taken for each point depend on (this is the arc length)

Answer 3

The distance that point is from the radius of rotation

Question 4

What is arc length

Answer 4

The curvilinear distance traveled by the point of interest

Question 5

What is angular speed

Answer 5

The angular distance covered by the time interval over which the motion occurred

Question 6

What is angular velocity

Answer 6

The angular displacement that occurs during a given period of time

Question 7

For a given angular velocity, linear velocities are…

Answer 7

Different depending on the distance from the radius of rotation

Question 8

What is tangential velocity

Answer 8

The linear velocity of a given point traveling along an angular path

Question 9

tangential velocity is a ____ velocity even though it is the result of ___ motion

Answer 9

linear

angular

Question 10

What is angular acceleration

Answer 10

The change in angular velocity occurring over a given period of time

Question 11

When does angular acceleration occur

Answer 11

When somethings starts, stops, speeds up, or slows down in a circular path

Question 12

What is the tangential acceleration

Answer 12

The component of linear acceleration tangent to the circular path of a point on a rotating object called the tangential acceleration

Question 13

Manipulating the radius or the length can affect…

Answer 13

the linear displacement or velocity

Question 14

To get the angular representation of a linear quantity you…

Answer 14

multiply by the radius

Question 15

What is centripetal acceleration

Answer 15

A force applied that causes something is turning around a circle

Question 16

How is the force applied in centripetal acceleration

Answer 16

Directed toward to centre of the circle. To the axis of rotation

Question 17

If something is turning around a circle it requires _____ to change direction

Answer 17

external force

Question 18

What is required to maintain an object travelling at an angular velocity in a circular path at a certain radial distance ?

Answer 18

An inward acceleration (or radial acceleration)

Question 19

When an object is rotating, what are the two types of linear acceleration acting on the object

Answer 19

Tangential acceleration and radial acceleration

Question 20

How do two types of linear acceleration acting on the rotating object act in relation to each other

Answer 20

at 90 degrees to each other

Question 21

The two linear accelerations of an object travelling around an axis can be added together using _____

Answer 21

Pythageroms theorem