地大《理论力学》在线作业一（Earth theory mechanics, online homework）.doc

下载文档 降价啦

13
0
约4.94千字
约 11页
2017-07-24 发布于河南
举报
版权申诉
保障服务

地大《理论力学》在线作业一（Earth theory mechanics, online homework）.doc

1、本文档共11页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

地大《理论力学》在线作业一（Earth theory mechanics, online homework）

地大《理论力学》在线作业一（Earth theory mechanics, online homework） Earth theory mechanics, online homework Total score: 100 test time: - Radio examination Radio examination questions (25 questions, 100 points) 1., under arbitrary initial conditions, the rigid body acts without force and should remain stationary or move linearly at constant speed. A. correct B. error Full marks: 4 2. the motion of the rigid body must be fixed axis if the points in the rigid body are in circular motion. A. correct B. error Full marks: 4 Three - A. A B. B C. C D. D Full marks: 4 4. homogeneous thin rod AB P, with two vertical suspension string into a horizontal position, when the end of the string B suddenly cut the instantaneous A point acceleration (for). A. 0; B. g; C. g/2; D. 2g. Full marks: 4 5. homogeneous rod AB, heavy P, long 2L, support as shown in horizontal position, when B end rope suddenly cut, instantaneous AB rod angular acceleration is the size of A. 0; B. 3g/ (4L); C. 3g/ (2L); D. 6g/L. Full marks: 4 The momentum moment of a 6. particle system to an axis is equal to the algebraic sum of the moments of the momentum of each particle in the system of particles. A. correct B. error Full marks: 4 Seven - A. A B. B C. C D. D Full marks: 4 The principal vector of the 8. particle system is related to the choice of the simplified center, while the principal moment of the inertial force system has nothing to do with the choice of the simplified center. A. correct B. error Full marks: 4 9. the mass of a rigid body is the measure of the size of the inertia of a rigid body in translation, and the moment of inertia of a rigid body against an axis is the measure of the size of a rigid body when it rotates around the axis. A. correct B. error Full marks: 4 10. the resultant force of the inertial force system on the rigid body of the plane motion must act on the center of mass of the rigid body. A. correct B. error Full marks: 4 Eleven - A. A B. B C. C D. D Full marks: 4 12. in principle, rule, th