Originally Posted by **ajpik** Am I right to say that a force applied to a lever will create a translation as well as a rotation? |

No - applying a force to a lever creates a moment about the pivot point, and whatever object is on the other end of the lever rotates about the pivot point. There is no linear translation- assuming of course that the pivot is held stationery.

Originally Posted by **ajpik** (Which is why all forces can be come couple/force systems) |

This is a different issue. The system consisting of a force applied at the end of the lever and a counteracting force at the pivot is mathemetaically the same as a couple at the pivot, at least in terms of the reslting motion of the systsm. Balance of forces can tell you what the reaction force at the pivot is, given the force applied to the lever and the mass of the object at the other end.

Originally Posted by **ajpik** So if you figure out the moment of force around the pivot point you can't just ignore the newtons that create that moment? |

To determine the moment about the pivot point you must know how many newtons were applied to create that moment - if that's what you're getting at.