- #1
pgardn
- 656
- 2
So say we have a stick in space with the CM in the middle and we apply two forces of equal magnitude and direction over the same time, one force at the CM, and the other at some distance away from the CM.
Ideas:
1. One would obtain just translational motion the other would have both translational and angular
2. One would not have angular momentum with respect to the path of the CM the other would, but both would have momentum in general.
3. One would have more work done on it in the same direction, the other would have work done in differing directions.
4. One would have only translational kinetic energy, one would have both translational and rotational K.
5. The acceleration of the CM would differ over this time.
6. I don't know quite how to think about the total distance over which the Force is applied for the Force at some distance away from the center of mass.
And its number 6 that got me wondering about all kinds of misconceptions. Any little piece of guidance that could make my ideas more accurate, because I break down at #6.
Ideas:
1. One would obtain just translational motion the other would have both translational and angular
2. One would not have angular momentum with respect to the path of the CM the other would, but both would have momentum in general.
3. One would have more work done on it in the same direction, the other would have work done in differing directions.
4. One would have only translational kinetic energy, one would have both translational and rotational K.
5. The acceleration of the CM would differ over this time.
6. I don't know quite how to think about the total distance over which the Force is applied for the Force at some distance away from the center of mass.
And its number 6 that got me wondering about all kinds of misconceptions. Any little piece of guidance that could make my ideas more accurate, because I break down at #6.
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