Section: Solid Mechanics | Marks: 2
A solid uniform rigid disk of mass π and radius π rolls without slipping along a horizontal surface PQ. The speed of the center of the disk is π£. The disk then strikes a hurdle of height 3π 20 at point S. During the impact, there is no rebound or slip at S and no impulse from the surface PQ. The magnitude of the velocity of the center of the disk immediately after the impact is
- A. 0.1π£
- B. 0.3π£
- C. 0.7π£
- D. 0.9π£
Answer: D. 0.9π£