1 / 9

2-3 Solution

B. C. a. A. D. form of a balanced force system. 2a. B. C. A. D. 2-3 Solution. take the rigid frame as object to study. 习 题 （静力学）. According to the graphical condition of equilibrium:. By the geometrical relation:. Therefore:. B. C. a. A. D. 2a. B.

elgin
Télécharger la présentation

2-3 Solution

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. B C a A D form of a balanced force system. 2a B C A D 2-3 Solution take the rigid frame as object to study 习 题（静力学） According to the graphical condition of equilibrium: By the geometrical relation: Therefore:

  2. B C a A D 2a B C A D y x 2-3 Solution take the rigid frame as object to study 习 题（静力学） Solving them, we obtain:

  3. D C l According to the character of two couples in equilibrium, and make up a new force A B l l l couple. C B D C y A x 2-6 Solution 1.Study the rod CB 习 题（静力学） 2.Take the rod DC to study

  4. B 4m 3m y M q x A 2-12Solution: 1. take the rigid structure as object to study 习 题（静力学） 2. draw force diagram (make analysis of force) 3. set equilibrium equation. MA free from constraints Solving them, we obtain:

  5. y x 2-14(a)Solution: M B 1. take beam AB to study A C 2. draw force diagram 习 题（静力学） a 2a 3. set equilibrium equation. Solving them, we obtain:

  6. q M A B D a a 2a y x 2-14(b) 1. take beam AB to study 习 题（静力学） 2. draw force diagram 3. set equilibrium equation. Solving them, we obtain:

  7. 10 m 1.5m x (It should be under the action of which the crane can not turn over 3 m around point B.) 2-16Solution: take crane to study, it is acted upon by a C.P.F.S. 习 题（静力学） 1. Firstly, let us examine the full-loaded position of the crane. free from constraints A B set equilibrium equation

  8. due to 10 m 1.5m x (The crane will turn over around point A unless we can ensure .) 3 m we get 习 题（静力学） ① 2. Secondly, let us examine the empty position of the crane. A B set equilibrium equation we get due to ②

  9. ① ② From ① and ②, we find the range of equilibrium 习 题（静力学） Hence

More Related