大学MOOC EngineeringMechanics(西南交通大学)1458216177 最新慕课完整章节测试答案
01ForceVectorsMomentsandFreeBodyDiagrams
文章目录
TestsforChapter01ReductionsofForceSystems
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 and .
选项：
A: 正确
B: 错误
答案: 【 错误】
9、判断题：
As long as two forces have the same magnitude and are in opposite directions, these two forces form a couple.
选项：
A: 正确
B: 错误
答案: 【 错误】
10、判断题：
For any coplanar force system, as long as its principal vector is not equal to zero, the force system can be reduced to one single force.
选项：
A: 正确
B: 错误
答案: 【 正确】
02Equilibriumofforcesystems
TestsforChapter02EquilibriumofForceSystem
1、单选题：
All weights and frictions can be neglected. If a force P is applied at the mid-point of bar AB, in which case the bar can be in a equilibrium state?
选项：
A: 
B: 
C: 
D: 
答案: 【 】
2、单选题：
A rigid body is in equilibrium state under the coplanar force system. Which set of equilibrium equations are not independent of each other?
选项：
A: SX = 0, Sx = 0, SmA(F) = 0
B: SmO(F) = 0, SmA(F) = 0, SmB(F) = 0
C: SmO(F) = 0, SmC(F) = 0, SY = 0
D: SX = 0, SY = 0, SmO(F) = 0
答案: 【 SmO(F) = 0, SmA(F) = 0, SmB(F) = 0】
3、单选题：
A rigid body is in equilibrium state under the coplanar force system. Which set of equilibrium equations are not independent of each other?
选项：
A: SX = 0, SmO(F) = 0, SmA(F) = 0
B: SmO(F) = 0, SmA(F) = 0, SmB(F) = 0
C: SmA(F) = 0, SmC(F) = 0, SY = 0
D: SX = 0, SmA(F) = 0, SmB(F) = 0
答案: 【 SX = 0, SmA(F) = 0, SmB(F) = 0】
4、单选题：
Consider the equilibrium of bar AB. The correct moment equation about point A should be
选项：
A: SmA(F) = m + Psinq × L/2 + M + mA = 0
B: SmA(F) = -m - Psinq × L/2 + M = 0
C: S