University Physics Wolfgang Bauer Gary Westfall Chapter 11
University Physics Wolfgang Bauer Gary Westfall Chapter 11 Copyright © The Mc. Graw-Hill Companies, Inc. Permission required for reproduction or display.
11. 1 In-Class Exercise If a point mass were placed at the far right end of the wooden cylinder in the sculpture in Figure 11. 9 a, how big could this mass be before the sculpture would tip over? a) 2. 4 kg b) 29. 1 kg c) 37. 5 kg d) 245 kg e) 1210 kg
11. 2 In-Class Exercise What can the student in Example 11. 4 do if he really has to get up just a bit higher than the maximum height allowed by equation (ii) for the given situation? a) He can increase the angle θ between the wall and the ladder. b) He can decrease the angle θ between the wall and the ladder. c) Neither increasing nor decreasing the angle will make any difference.
11. 3 In-Class Exercise In Figure 11. 16, which surface contains equilibrium points other than the one marked with the black dot? a) b) c) d)
11. 4 In-Class Exercise If all other parameters in Solved Problem 11. 2 remain unchanged, but the sign is moved further away from the wall toward the end of the post, what happens to the tension, T ? a) It decreases. b) It stays the same. c) It increases.
11. 5 In-Class Exercise If all other parameters in Solved Problem 11. 2 remain unchanged, but the angle θ between the cable and the post is increased, what happens to the tension, T ? a) It decreases. b) It stays the same. c) It increases.
Answer Key – Chapter 11 11. 2 11. 3 11. 4 11. 5 d b b c a
- Slides: 7