Angular Motion I

A ceiling fan with 16 inch blades rotates at 45 rpm.  Find the angular velocity of the fan in rad/min.  Round to the nearest tenth.

• 90 rad/min
• 282.7 rad/min
• 45 rad/min
• 141.4

How many revolutions will a car wheel of diameter 30 in. make as the car travels a distance of one mile?  (Hint:  determine the circumference first ... rev/circumference ... then convert to rev/mile)  Round answer to the nearest tenth.

• 6635.0 rev/mile
• 672.3 rev/mile
• 884.7 rev/mile

The wheels of a car have radius 11 in. and are rotating at 600 rpm.  Determine the speed of the car in miles/hour to the nearest tenth.  (Determine ω (angular velocity) first and then use v=ω⋅r and convert to miles/hour)

• 6.3 miles/hour
• 12.5 miles/hour
• 39.3 miles/hour
• 78.5 miles/hour

Determine the angular velocity in rad/min of a gyroscope rotating at 6 rps (revolutions per second). Leave answer in terms of π.

• 360π rad/min
• 12π rad/min
• 360 rad/min
• 720π rad/min

Categorize something that is measured in radians per second

• Linear Distance

• Angular Distance

• Linear Speed

• Angular Speed

Categorize something that is measured in rpm (revolutions per minute)

• Linear Distance

• Angular Distance

• Linear Speed

• Angular Speed

What is angular velocity

• the rate of angular displacement of an object

• the resistance of an object to change its current state

• the amount of angular motion of an object

360 degrees in radians is

• 3.14

2 cars are moving at the speed of 22 m/s.

the radius of the 1st vehicle's tire is 22 cm

and of the 2nd vehicle's tires is 30 cm. which tire has a greater angular speed?

• the 1st car

• the 2nd car

• angular velocity
  

• angular acceleration

• rotational inertia