Page 142 - Schaum's Outline of Theory and Problems of Applied Physics
P. 142
CHAP. 10] ROTATIONAL MOTION 127
10
10.10. (a) 2293 rad (b) 1.47 × 10 m
10.11. (a) −4.2 rad/s 2 (b) 5250 rad (c) 836 rev
10.12. 120 rev
10.13. (a) 0.614 rad/s 2 (b) 51.3 s
37
10.14. 9.8 × 10 kg·m 2
10.15. 33 cm
10.16. (a) The solid cylinder reaches the bottom first because less of its total kinetic energy is KE of rotation.
(b) The total kinetic energies of the cylinders are the same since they had the same potential energies at the top of
the plane.
10.17. 4.57 m
10.18. 1600 rev/min
10.19. 17.5 N
10.20. (a) 1.45 hp (b) 57 rev/min (c) 133 lb·ft
10.21. 133 kg·m 2
10
10.22. (a) 1.6 × 10 J (b) 4.4 h
10.23. (a) 6 s (b) 3900 J
3
10.24. (a) 2.63 lb·ft (b) 234 turns (c) 3.86 × 10 ft·lb
10.25. (a) 50 rad/s (b) 2500 J
