1. A shaft of radius 8.50 cm rotates 7.00 rad/s. Find its angular displacement (in rad) in 1.20 s.

2. A wheel of radius 0.240 m turns at 4.00 rev/s. Find its angular displacement (in rev) in 13.0 s.

3. A pendulum of length 1.50 m swings through an arc of 5.0°. Find the length of the arc through which the pendulum swings.

4. An airplane circles an airport twice while 5.00 mi from the control tower. Find the length of the arc through which the plane travels.

5. A wheel of radius 27.0 cm has an angular speed of 47.0 rpm. Find the linear speed (in m/s) of a point on its rim.

6. A belt is placed around a pulley that is 30.0 cm in diameter and rotating at 275 rpm. Find the linear speed (in m/s) of the belt. (Assume no belt slippage on the pulley.)