the force F =

19.22 The 100-kg homogeneous cylindrical disk is at rest when

500 N is applied to a cord wrapped around it,

causing the disk to roll. Use the principle of work and energy to

determine the angular velocity of the disk when it has turned

one revolution.

300 mm

Problem 19.22

F m =

19.20 The mass of the homogeneous cylindrical disk is

5 kg and its radius is R 0.2 m. The angle ß = 15°. The

disk is stationary when a constant clockwise couple M = 10 N-m

is applied to it. If the disk rolls without slipping, what is the

velocity of the center of the disk when it has moved a distance

b = 0.4 m? (See Active Example 19.1.)

R

M

b

=

B

Problem 19.20