回復 10# 的帖子
But isnt it only true when the forces are passing through the axis of rotation? 3 force passing through 1 point => net force in 1 directionotherwise, at least 2 net force acting at 2 point => couple or turning force. 講真, 只看new way係唔會知有D gum ge 野-.- 原帖由 L.K. 於 11-12-2008 23:17 發表 http://www1.nakuz.com/bbs/images/common/back.gif
阿sir話d froce穿過同一點會冇torque...[]
穿過CG先會冇torque。 阿sir話d froce穿過同一點會冇torque...[]
L.K. 發表於 11-12-2008 23:17 http://www4.nakuz.com/bbs/images/common/back.gif
torque makes a object to ROTATE
if forces pass through one point only
that means the directions of forces are opposite to each other
so no rotation is found out of syllabus out of syllabus
aildux 發表於 3-1-2009 16:10 http://www4.nakuz.com/bbs/images/common/back.gif
aildux兄好似係小卒ge phy神人[] 宣傳論壇, -100分 []那裡有宣傳論壇 那裡有宣傳論壇[]