Answers

2016-07-03T19:16:35+08:00
-they just meet at a single point of just made an intersecting line..
-states that the conditions of equilibrium or conditions of motion of a rigid body will remain unchanged if a force acting at a give point of the rigid body is replaced by a force of the same magnitude and same direction, but acting at a different point, provided that the two forces have the same line of action.
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