2024知到答案 理论力学（长安大学） 完整智慧树网课章节测试答案
绪论 单元测试
文章目录
1、判断题：
After the 20th century, physics divided into two branches: modern physics and modern mechanics.（ ）
选项：
A:对
B:错
答案: 【对】
2、单选题：
Who is known as the "father of mechanics"（ ）.
选项：
A:Newton
B:Archimedes
C:Steven
D:Aristotle
答案: 【Archimedes】
第一章 单元测试
1、判断题：
There is a coplanar concurrent force system
acting on a rigid body, and the force vector relationship of the forces is shown in Figure，It can be known that the resultant force of the force system is zero and the force system is in equilibrium.（ ）
选项：
A:错
B:对
答案: 【错】
2、判断题：
As is shown in the figure, the force P on AC can be moved to BC according to the transmissibility of the force.（ ）
选项：
A:对
B:错
答案: 【错】
3、判断题：
A rigid body, subjected to forces which are acted on two points, is called Double-force Body. （ ）
选项：
A:对
B:错
答案: 【错】
4、判断题：
and
means the same. （ ）
选项：
A:对
B:错
答案: 【错】
5、判断题：
The FBD shown in the figure is correct. （ ）
选项：
A:错
B:对
答案: 【错】
第二章 单元测试
1、单选题：
There is a coplanar concurrent force system 
acting on a rigid body, and the force vector relationship of the forces is shown in Figure，It can be known that the reduction of the force system is（ ）.
选项：
A:a force
B:a force and a couple
C:in equilibrium
D:a couple
答案: 【in equilibrium】
2、单选题：
As is shown in the figure, if the couple M acting on AC is moved to BC, the magnitude of the reaction forces at A, B and C（ ）.
选项：
A:unchanged at A and B, changed at C
B:All unchanged
C:changed at A and B, unchanged at C
D:All changed
答案: 【All unchanged】
3、判断题：
The magnitude and direction of the force can be determined by the analytical expression of the force 
.（ ）
选项：
A:错
B:对
答案: 【对】
4、单选题：
The weight of the rod AB and CD and the friction is ignored, if the moment of the couple acting on the rod AB is 
, in order to keep the system balanced, the moment of the couple acting on the rod CD is 
is shown in the figure, and its moment value is（ ）.
选项：
A:
B:
C:
D:
答案: 【】
5、单选题：
As is shown in the figure, the couple M acts on the AC rod, the magnitude of the reaction force of support A is（ ）.
选项：
A:4 kN
B:8 kN
C:5 kN
D:10 kN
答案: 【10 kN】