本课配套习题挑战模式1/5
力臂就是( )
A: 杠杆的总长度 |
B: 支点到杠杆一端的距离 |
C: 支点到力的作用线的距离 |
D: 动力到阻力的距离 |
- 提示1:PHA+54K55Yiw5Yqb5L2c55So57q/55qE6Led56a7PC9wPg==
- 提示2:PHA+5Yqb6IeC5piv5pSv54K55Yiw5Yqb5L2c55So57q/55qE6Led56a744CCPGJyPjwvcD4=
- 提示3:PHA+5Lqy77yM6L+Y5LiN5Lya5LmI77yfPC9wPg==
- 答案:Qw==
PHA+5Yqb6IeC5piv5pSv54K55Yiw5Yqb5L2c55So57q/55qE6Led56a744CCPGJyPjwvcD4=
本课配套习题挑战模式2/5
A: |
B: |
C: |
D: |
- 提示1:IOaJvuWIsOaUr+eCueWSjOWKmw==
- 提示2:IOaJvuWIsOWKm+eahOS9nOeUqOe6vw==
- 提示3:IOaUr+eCueWIsOWKm+S9nOeUqOe6v+i3neemu+WwseaYr+WKm+iHgg==
- 答案:QQ==
PGRpdj5B44CB5Yqo5Yqb5Li6Ru+8jOi/h+aUr+eCuU/lkJHliqjlipvkvZznlKjnur/nlLvlnoLnur/ljbPkuLrliqjlipvoh4JM77yM5pWFQeato+ehru+8mzxicj5C44CB5Yqb6IeCTOS4jkbnmoTkvZznlKjnur/kuI3lnoLnm7TvvIzmlYVC6ZSZ6K+v77ybPGJyPkPjgIHlipvoh4LmmK/mjIdP54K55YiwRuS9nOeUqOe6v+eahOWegue6v+aute+8jOiAjOWbvuS4reeahEzmmK9G5L2c55So57q/55qE5LiA6YOo5YiG77yM5pWFQ+mUmeivr++8mzxicj5E44CB5Zu+5Lit55qE5Yqb6IeC5rKh5pyJ6L+H5pSv54K5T+WQkeWKqOWKm+S9nOeUqOe6v+eUu+Wegue6v++8jOaVhUTplJnor68uIDwvZGl2Pg==
本课配套习题挑战模式3/5
下列关于动力F1力臂的作图中,正确的是( )
A: |
B: |
C: |
D: |
- 提示1:PHA+5om+5Yiw5pSv54K55ZKM5Yqb55qE5L2c55So57q/77yM5LiA5a6a6KaB5piv5Yqb55qE5L2c55So57q/44CCPGJyPjwvcD4=
- 提示2:PHA+5rOo5oSP5aSn5ous5Y+36LW35aeL54K544CCPGJyPjwvcD4=
- 提示3:PHA+5pyJ5aSn5ous5Y+377yM5pyJ5qCH5rOo44CCPGJyPjwvcD4=
- 答案:Qw==
PGRpdj5B5piv5p2G6ZW/77yM5Yqb55qE5pa55ZCR5rKh5pyJ5Z6C55u05Yqb6IeC44CCPC9kaXY+PGRpdj5C5Lit5Yqb6IeC5Lmf5rKh5pyJ5Z6C55u05Yqb55qE5pa55ZCR44CCPC9kaXY+PGRpdj5D5piv5pSv54K55Yiw5Yqb55qE5L2c55So57q/6Led56a777yM5piv5Yqb6IeC44CCPC9kaXY+PGRpdj5E6Jm954S25YGa5LqG5Z6C55u077yM5L2G5LiN5piv5pSv54K55Yiw5Yqb5L2c55So57q/6Led56a777yM6ICM5piv5Yqb55qE5bu26ZW/57q/5Yiw5Z6C6Laz6Led56a744CCPGJyPjwvZGl2Pg==
本课配套习题挑战模式4/5
如图所示,杠杆处于平衡状态,则F的力臂是( )
A: OA |
B: OC |
C: OD |
D: FD |
- 提示1:PFA+5om+5Yiw5pSv54K55ZKM5YqbPC9QPg==
- 提示2:PFA+5om+5Yiw5Yqb55qE5L2c55So57q/PC9QPg==
- 提示3:PFA+5pSv54K55Yiw5Yqb5L2c55So57q/6Led56a75bCx5piv5Yqb6IeCPC9QPg==
- 答案:Qg==
PERJVj7ku47lm77kuK3lj6/ku6XnnIvlh7rmlK/ngrlP5YiwRuS9nOeUqOe6v+eahOWegue6v+auteS4uk9DLiDlhbbku5bnur/mrrXvvIzlpoJPQeOAgU9E6YO95LiORueahOS9nOeUqOe6v+S4jeWeguebtO+8jERG5Z6C55u0T0TvvIzkvYbkuI5G55qE5L2c55So57q/5LiN5Z6C55u077yM5omA5Lul5Y+q5pyJT0PnrKblkIg8L0RJVj4=
本课配套习题挑战模式5/5
如图所示,F1、F2、F3、G四个力中,力臂最小的一个力是( )
A: F1 |
B: F2 |
C: F3 |
D: G |
- 提示1:PHA+55S75Ye65q+P5Liq5Yqb55qE5Yqb6IeCPGJyPjwvcD4=
- 提示2:PHA+5q+U6L6D5Yqb6IeC5aSn5bCP44CCPGJyPjwvcD4=
- 答案:RA==
PGRpdj7nlLHlm77nn6XvvIznlLHmlK/ngrnliIbliKvlkJHlm5vkuKrlipvlgZrlnoLnur/vvIzmr5TovoPlm5vkuKrlnoLnur/mrrXnmoTplb/luqYuIOacgOWQjuW+l+WHukfnmoTlipvoh4LmnIDlsI88YnI+PC9kaXY+