打成档案以飨学弟妹 ============================================================================= part one 50% (注:选择可能有复选) 1.cm,km,g are fundamental units of the Systeme International d'Unites(SI). (true or false) 2.Addition of two bound(fixed) vector can be easily carried out using the triangle rule or the rectangular components.(true or false) 3.The first person to successfully refuted the Aristotelian theory that heavy bodies fall faster than light bodies do was (A)Issac Newton, (B)Leonardo da Vincci, (C)Galileo Galilei. 4.Which of the fallowing is a specail case of Newton's second law of motion (A)Newton's first law, (B)Newton's third law, (C)Archimedes' principle of lever. 5.In Statics analysis, a PARTICLE is a body (A)physically very small with zero dimension, (B)its size has no consequence on its responce to the external forces, (C)its rotation can be neglected, (D)its mass has no significance in the analysis of its responce to the forces that act on it. 6.In Statics analysis, a RIGID BODY is a body that (A)does not deform under the action of forces, (B)the distance between any two points on the body remains constant with time, (C)its size will influence its response to external force, (D)only the external effects of forces on the body need to be considered. 7.MASS of a body can be directly measured by (A)a balance-type scale(天平), (B)a spring scale (弹簧秤), (C)an electronic scale(the one often used in the supermarkets) 8.A body that can be modeled as a particle in one situation can be regarded as a particle in all situation during an engineering mechanics analysis.(true or false) 9.The LAWS OF MECHANICS are dependent on the system of units used.(true or false) 10.The U.S. CUSTOMARY SYSTEM base units are defined in terms of SI base units. (true or false) ============================================================================ part two 课本习题两题(25% each) 还是不要po答案好了,这样学弟妹才会自己念书找 --

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