博懈秦壳颈红钒烹趴革瓶五氓
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?
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?
A:
B:
C:
D:
答案:
3、单选题:
To study the whole system, which free-body diagram is correct?
A:
B:
C:
D:
答案:
4、单选题:
To study the whole system, which free-body diagram is correct?
A:
B:
C:
D:
答案:
5、单选题:
To study the whole system, which free-body diagram is correct?
A:
B:
C:
D:
答案:
6、单选题:
For bar AD, which free-body diagram
is correct?
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
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
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