MOOC Engineering Mechanics(河南理工大学)1450176251 最新慕课完整章节测试答案
01 Reductions of force systems
Tests for week 1
1、单选题:
As shown in the parallelogram, all forces are at point A. In which figure FR can be considered as the resultant of F1 and F2?
选项:
A:
B:
C:
D:
答案: 【 】
2、单选题:
Neglect the weights of all members. In which case bar BD is not a two-force member?
选项:
A:
B:
C:
D:
答案: 【 】
3、单选题:
To study the whole system, which free-body diagram is correct?
选项:
A:
B:
C:
D:
答案: 【 】
4、单选题:
To study the whole system, which free-body diagram is correct?
选项:
A:
B:
C:
D:
答案: 【 】
5、单选题:
To study the whole system, which free-body diagram is correct?
选项:
A:
B:
C:
D:
答案: 【 】
6、单选题:
For bar AD, which free-body diagram
is correct?
选项:
A:
B:
C:
D:
答案: 【 】
7、多选题:
In this equilibrium mechanism, the free-body diagram of crank OA can be drawn as
选项:
A:
B:
C:
D:
答案: 【 ;
;
】
8、判断题:
The resultant force of two intersecting forces and is , i.e., . The magnitude of must be larger than those of