Let's talk about the relationship between force balance and moment balance in detail. For example, is the moment balanced in case of force imbalance? Is the force balanced in case of moment imbalance? Give an example~

Let's talk about the relationship between force balance and moment balance in detail. For example, is the moment balanced in case of force imbalance? Is the force balanced in case of moment imbalance? Give an example~

There is no direct relationship
1. Force balance, moment balance: Needless to say
2. Force balance, moment imbalance: when the wind blows, the moment of the windmill is unbalanced, so it rotates. When it rotates, the position of the center of mass remains unchanged, so the force is balanced
3. Force imbalance, moment balance: the acceleration of the car on the straight road, the center of mass do acceleration, so the force is not balanced, but it does not rotate, so the moment is balanced
4. Imbalance of force and moment: the center of mass of the wheel of an accelerating car accelerates and the angular velocity increases, so the force and moment are unbalanced