Introduction to Rotational Motion

A bicycle wheel turns through 4.5 revolutions. What is the angular displacement of the wheel? (2sf)

• 9.42 rad

• 37.70 rad

• 18.85 rad

• 28.27 rad

5 degrees is how many radians?

• 0.157079 radians
• 0.523599 radians
• 0.087266 radians
• 0.349066 radians

A wheel turns through 4.5 revolutions, what distance does a point on the rim travel if the wheel has a radius of 0.40 m?

• The point on the rim travels approximately 11.31 meters.
• The point on the rim travels approximately 5.67 meters.
• The point on the rim travels approximately 8.20 meters.
• The point on the rim travels approximately 15.50 meters.

An aircraft propeller rotates at a speed of 4000 revolutions per minute and has a radius of 0.80 m. Find the angular velocity of the propeller.

• 418.88 rad/s
• 500.75 rad/s
• 380.25 rad/s
• 450.00 rad/s

If an aircraft propeller has an angular speed of 420 rad/s and a radius of 0.80 m, what is the linear speed of the tip of the propeller?

• 336 m/s
• 280 m/s
• 400 m/s
• 500 m/s

How many revolutions (rounded to a whole number) would a wheel have made if it has spun 75.40 radians.

• 20
• 12
• 15
• 10