Chapter 10- College Physics, 7^th Edition (Sears, Zemansky, Young)

10 – 1. 0.405 m to right of center of the 1.00 kg ball

10 – 2. 0.357 m to right of center of 1.0 kg ball

10 - 3. (0.133 m, 0.133 m)

10 – 4. 2.67 ft from other end

10 – 5. 1200 N; 0.833 m from end where the 700N forces acts

10 – 6. 900 N; 0.778 m from end where 700 N force acts

10 – 7. a) 1560 N b) 480 N

10 – 8. a) 300 N; 0 b) 150N; 150 N

10 – 9. ?

10 – 10. a) 667 N b) 533 N, 100 N

10 – 11. a) 1.73w; 2w at 30° above horizontal (along strut)

b) 2.73w; 3.35w at 45° above horizontal ( along strut)

10 – 12. ?

10 – 13. 53.3 N; 53.3 N

10 – 14. a) 3980 N; 3980 N, 8800 N b) no, 65.6° above horizontal

10 – 15. a) 1.12 m b) clockwise

10 – 16. a) 4.5 N*m, counterclockwise b) 4.5 N*m, counterclockwise

10 – 17. 2.13 m

10 – 18. a) 37.5 N b) 37.5 N

10 – 19. b) 2.22 m c) 2.68 m

10 – 20. a) 28 N, 82 N b) 43.6 N; 78.9 N

10 – 21. 4.05 m along the ladder, measured from the floor

10 – 22. 1.04 m

10 – 23. a) 2.89 m b) 161 N

10 – 24. 9950 N; 12,150 N

10 – 25. a) 21.8° b) 0.112 m c) 0.529

10 – 26. 90 N; 120 N

10 – 27. a) 30 N (to left); 50 N (up) b) 59° c) 58 N d) 4 m from the left-hand

10 – 28. a) 60 N b) 53.1°

10 – 29. a) 960 N b) 753 N

10 – 30. a) 540 N b) 364 N c) 5.47 m

10 – 31. a) 390 N b) 173 N

10 – 32. a) 161 N b) 139 N c) 220 N

10 – 33. You: 1176 N; friend: 784 N; above

10 – 34. a) (L/2) cos (a/2) below apex b) L/3 above center of horizontal section

10 – 35. a) slip: 16.7°; tip: 26.6°; slips first b) yes, tips first

10 – 36. a) 73.5 N b) 0.417 m

10 – 37. a) A: 120 N; B: 480 N b) 2.5 m

10 – 38. a) 853 N b) 2450 N c) 0.653h above ground

10 – 39. a) Left: 489 N; right: 561N b) 336 N c) 354 N d) 976 N