已知P=100N,F=80N,静摩擦因数fs=0.2,物块将______。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/ad33c7634e564c23be1cd18f76f6fd7b.png
举一反三
- 已知P=100N,F=80N,静摩擦因数fs=0.2,物块将______。htt...be1cd18f76f6fd7b.png
- 若F=50kN,P=10kN,墙与物体间的静摩擦因数fs=0.3,则摩擦力为________________。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/a8d4ce68ca1f429fb71a6fffdf6a1514.png
- 已知f(t)↔F(w),则下列说法正确的是() A: tf(t)↔wF(w) B: F(t)↔f(w) C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/e987a05c70d3455bad2fbdef6ce1fc1d.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/92f68075a5ff43708660199e4eed9415.png" />
- 设f(x)连续函数,则=( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/d61df8d810544f27ada3ecb86c2d853a.png
- 物 A 重 100kN ,物 B 重 25kN , A 物与地面的静摩擦因数为 0.2 ,滑轮处摩擦不计。则物体 A 与地面间的摩擦力为__________。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/0aec5c6cb2854709bd40d0ef73e5d95f.png