Page 126 - Schaum's Outline of Theory and Problems of Applied Physics

CHAP. 9] CIRCULAR MOTION AND GRAVITATION 111

Answers to Multiple-Choice Questions

9.1. (c) 9.8. (d)

9.2. (a) 9.9. (a)

9.3. (d) 9.10. (d)
9.4. (d) 9.11. (a)

9.5. (a) 9.12. (b)

9.6. (b) 9.13. (b)
9.7. (c)

Answers to Supplementary Problems

9.1. No.
9.2. The value of g decreases; the value of G is the same everywhere in the universe.

9.3. They are equal. 9.16. 7.6 N

9.4. 1 kg; 0 9.17. 0.41 kN
9.5. 12.3 ft/s 2 9.18. (a) 3.13 m/s (b) 2.00 s

9.6. 5 m/s 9.19. 6.67 × 10 −8 N

9.7. 5.6 lb 9.20. 8.6 × 10 −7 lb

4
9.8. 1.25 × 10 N 9.21. 72 lb
9.9. 17 m/s 9.22. (a)20 lb (b) 5.6 slugs
9.10. 0.71
9.23. (a)73 N (b)10 kg
9.11. 21 mi/h
9.24. 784 N; 455 N
9.12. 57 m
9.25. 2650 km
9.13. 2.35 km 3
9.26. 6.5 × 10 m/s
9.14. 24.7 m/s 7
9.27. 2.67 × 10 m
9.15. 11 m/s