how to perform basic vector algebra,differentiation and integration etc. 2.Remember that in solving problems from engineering mechanics you are solving real practical problems and producing real data with physical significance. Thus,you are responsible for making sure your results are correct,consistent and well-presented.Get into the habit of doing this now so that it will become second nature by the time you graduate.In the world of professional engineering you have a responsibility to your profession and to the many people that will use the product you will help to design,manufacture or implement. 四、作业 P16:1-6 Review questions:True or False? 1.The subject called Statics studies only bodies which are at rest. 2.A particle has a mass but negligible shape/size. 3.A rigid body has a mass but negligible shape/size. 4.Newton's three laws of motion can be proved mathematically 5.Weight is a property of matter that does not change from one location to another. 6.In the SI system of units,the newton is a derived unit. 7.When performing numerical calculations,the final answer should be reported to three significant figures. 8.In an equation it's permitted to have different terms expressed in different units.This is referred to as dimensionally inhomogeneous. Answers:1.F;2.T,3.F;4.F;5.F;6.T;7.T;8.F. 五、参考资料 Statics.R.C.Hibbeler.机械工业出版社，影印版，原书第12版，2014.01 六、教学后记 本章的基本原理是学生在先修课程中已经学习过和接触过，因此本章采用自 学的方式进行。学生结合课件及本章思考题进行学习和总结，在一定程度上培养 学生自主学习能力。 Chapter 2 Force vector 一、教学内容及要求 教学内容(2学时)： 2.1 Scalars and Vectors(标量和矢量) 2.2 Vector Operations(矢量运算) 2.3 Vector addition of forces(力的矢量合成) 2.4 Addition of a system of coplanar forces(平面力系的合成) 2.5 Cartesian vectors(笛卡尔矢量) 2.6 Addition of Cartesian vectors(笛卡尔矢量的合成)how to perform basic vector algebra, differentiation and integration etc. 2. Remember that in solving problems from engineering mechanics you are solving real practical problems and producing real data with physical significance. Thus, you are responsible for making sure your results are correct, consistent and well-presented. Get into the habit of doing this now so that it will become second nature by the time you graduate. In the world of professional engineering you have a responsibility to your profession and to the many people that will use the product you will help to design, manufacture or implement. 四、作业 P16：1-6 Review questions: True or False? 1. The subject called Statics studies only bodies which are at rest. 2. A particle has a mass but negligible shape/size. 3. A rigid body has a mass but negligible shape/size. 4. Newton’s three laws of motion can be proved mathematically. 5. Weight is a property of matter that does not change from one location to another. 6. In the SI system of units, the newton is a derived unit. 7. When performing numerical calculations, the final answer should be reported to three significant figures. 8. In an equation it’s permitted to have different terms expressed in different units. This is referred to as dimensionally inhomogeneous. Answers: 1. F; 2. T; 3. F; 4. F; 5. F; 6. T; 7. T; 8. F. 五、参考资料 Statics. R.C. Hibbeler. 机械工业出版社，影印版，原书第 12 版，2014.01. 六、教学后记 本章的基本原理是学生在先修课程中已经学习过和接触过，因此本章采用自 学的方式进行。学生结合课件及本章思考题进行学习和总结，在一定程度上培养 学生自主学习能力。 Chapter 2 Force vector 一、教学内容及要求 教学内容（2 学时）： 2.1 Scalars and Vectors（标量和矢量） 2.2 Vector Operations（矢量运算） 2.3 Vector addition of forces（力的矢量合成） 2.4 Addition of a system of coplanar forces（平面力系的合成） 2.5 Cartesian vectors（笛卡尔矢量） 2.6 Addition of Cartesian vectors（笛卡尔矢量的合成）