Page 159 - Schaum's Outline of Theory and Problems of Applied Physics
P. 159
144 EQUILIBRIUM [CHAP. 11
Answers to Supplementary Problems
11.1. No. The rope must sag in order for its tension to provide an upward component of force to support the weight. The
greater the tension, the less the sag, but it is impossible for the rope to be perfectly horizontal.
11.2. Fd
11.3. 1m
11.4. 28 N in each rope
11.5. The tension in the left-hand rope is 727 N and that in the right-hand rope is 387 N.
11.6. 200 N
11.7. 536 N
11.8. 26 N
11.9. The balance point is 1.2 ft from the 30-lb weight.
11.10. The pail should be 60 cm from the man.
11.11. The third child should be 1 m from the 20-kg child.
11.12. The front wheels each support 686 lb, and the rear wheels each support 514 lb.
11.13. (a) 306 N (b) 2756 N
11.14. 5323 N
11.15. 8.6 lb; 8.6 lb
11.16. 16.5 N
11.17. 147 N; 55 N
11.18. 67 cm from the crossbar.
