01Reductionsofforcesystems

Testsforweek1

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?

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