- #1
fog37
- 1,568
- 108
Hello,
It is well know that the moment of a force ##F## depends on:
a) the force magnitude ##|F|##
b) the choice of the moment reference point ##P##
c) the distance (lever arm) from the point ##P## to the point of application of the force ##Q##.
That said, an object with a single force applied to it will experience a moment which will vary in magnitude and sign with difference choices of the moment reference point ##P##. However, physically, the object will move in one specific and unique way under that same force (rotation+translation). How do different values of the moment ##M## produce the same physical situation?
Maybe all angular quantities, like angle, angular velocity, angular acceleration, moment of inertia, rotational kinetic energy, etc. must be referred to that specific and arbitrarily chosen point ##P##?
In general, we refer vectorial quantities (position, velocity, acceleration) to the origin ##O## of the triad of Cartesian axes...
It is well know that the moment of a force ##F## depends on:
a) the force magnitude ##|F|##
b) the choice of the moment reference point ##P##
c) the distance (lever arm) from the point ##P## to the point of application of the force ##Q##.
That said, an object with a single force applied to it will experience a moment which will vary in magnitude and sign with difference choices of the moment reference point ##P##. However, physically, the object will move in one specific and unique way under that same force (rotation+translation). How do different values of the moment ##M## produce the same physical situation?
Maybe all angular quantities, like angle, angular velocity, angular acceleration, moment of inertia, rotational kinetic energy, etc. must be referred to that specific and arbitrarily chosen point ##P##?
In general, we refer vectorial quantities (position, velocity, acceleration) to the origin ##O## of the triad of Cartesian axes...