1 / 12

12- 3 solution ：

6m. B. A. h. 12- 3 solution ：. (1) work done by gravity:. (2) work done by F :. note: F is a unconstant force. 200. 12- 5 solution ：. (1) take the ball to study. (2) make analysis of force. (3) from. we get:. Note: the stiffness of the spring is. B. A. O.

tatum
Download Presentation

12- 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. 6m B A h 12- 3 solution： (1) work done by gravity: (2) work done by F: note: F is a unconstant force

  2. 200 12- 5 solution： (1) take the ball to study (2) make analysis of force (3) from we get: Note: the stiffness of the spring is

  3. B A O note the direction of B A O 12- 6 solution： (1) take system to study (2) make analysis of force P (3) make analysis of motion P is the ICV of rod AB (4) use TKES

  4. P B A O

  5. A B note the direction of and 12- 10 solution： Choose the whole system to be investigated. When rod AB reaches the horizontal position, B is the ICV of rod AB. The disk B has instantaneous translation. From the theorem of kinetic energy, we have

  6. A B from Assuming that the final deformation of the spring is At the initial moment: At the lowest position , we get:

  7. A C B b , we get from When Assuming that: 12- 14 solution： take the rod to study

  8. P2 B A R P1 note the direction of 12- 15 solution： (1) take system to study (2) make analysis of motion When the linkage is in the position shown: P1 is the ICV of wheel A P2 is the ICV of rod AB (3)use TKES

  9. P2 B A R P1 derivative it:

  10. P2 B A R P1

  11. (1) Using the theorem of kinetic energy to determine 综-14 solution： take the system to study Form the time-derivative we obtain

  12. (2) Using the differential equations to determine the reaction forces of bearing O take wheel O to study we obtain:

More Related