7-2 Rotation

The axis of rotation lie

• only within the moving object

• only outside the moving object

• either inside or outside the moving object

An object spins at 60 RPM, how many rotations does it make in 2 seconds

• 1

• 2

• 60

• 120

Two ladybugs are on a spinning disk, bug A is close to the center and bug B is close to the edge. The bug with the greater rotational speed is _____

• bug A

• bug B

• they are the same

Two ladybugs are on a spinning disk, bug A is close to the center and bug B is close to the edge. The bug with the greater tangential velocity is _____

• bug A

• bug B

• they are the same

A bicycle wheel has a radius of 0.5 m. How far does it travel if it makes one rotation.

• 0.5 m

• 0.79 m

• 1 m

• 1.6 m

• 3.14 m

A wheel with a circumference of 2 m, rotates 12 times in 3 seconds. What is the distance traveled?

• 2

• 6

• 12

• 24

• 36

A wheel with a circumference of 2 m, rotates 12 times in 3 seconds. What is its linear speed

• 4

• 6

• 8

• 12

• 24

A wheel with a circumference of 2 m, rotates 12 times in 3 seconds. What is its rotational speed?

• 4

• 6

• 8

• 24

• 36

For the object travelling clockwise in the picture the, arrow that best depicts the centripetal force is

• A

• B

• C

• D

• E

For the object travelling clockwise in the picture the, arrow that best depicts the tangential velocity is

• A

• B

• C

• D

• E