题目
一力F作用在平面OABC上(如图所示),于是力F对OX、OY、OZ三轴之矩应为( )。A. m x (F)=0,m y (F)=0, m z (F)=0B. m x (F)=0,m y (F)=0, m z (F)≠0C. m x (F)≠0,m y (F)≠0, m z (F)=0D. m x (F)≠0,m y (F)≠0, m z (F)≠0
一力F作用在平面OABC上(如图所示),于是力F对OX、OY、OZ三轴之矩应为( )。
A. m x (F)=0,m y (F)=0, m z (F)=0
B. m x (F)=0,m y (F)=0, m z (F)≠0
C. m x (F)≠0,m y (F)≠0, m z (F)=0
D. m x (F)≠0,m y (F)≠0, m z (F)≠0
题目解答
答案
C. m x (F)≠0,m y (F)≠0, m z (F)=0