A.P/L
B.PL/2
C.PL
D.P/L^2
A.P/L
B.PL/2
C.PL
D.P/L^2
A.增加力臂长度
B.减小作用力
C.减小力臂长度或增加作用力
D.增加结构重量
A.100mm
B.150mm
C.200mm
D.250mm
A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240116/1705384181035559.png">
B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240116/1705384181053404.png">
C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240116/1705384181081187.png">
D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240116/1705384181098481.png">
A. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392417235.jpeg">
B. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392467342.jpeg">
C. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392541136.jpeg">
D. <img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392607696.jpeg">
A.3kN·m
B.4.5kN·m
C.2.25kN·m
D.4.5kN·m
A.减半
B.不变
C.增加一倍
D.增加两倍
A.12kNm
B.15kNm
C.18kNm
D.20kNm
A.0kN·m
B.2kN·m
C.4kN·m
D.6kN·m