Goal: Problem solving with dynamics
disk, with radius 0.25 m and mass 4 kg, lies on a smooth
horizontal table. A string wound about the disk is pulled with a
force of 8N. What is the acceleration of the disk?
- 0.5 m/s2
- 1 m/s2
- 2 m/s2
- 4 m/s2
- None of the above.
- Cannot be determined
(4) Students find it difficult to grasp that the angular dynamic
relationship does not replace, but rather augments, the 2nd law.