The conversation between human and AI assistant.
If the sum of the moments of coplanar forces about three non coplaner points are the same show that the system reduced to a couple?
Interesting. Can you think of an example of a system that uses couples?
One example of a system that uses couples is a car suspension system. The shock absorbers in a car suspension system use hydraulic pressure to resist motion, but the actual movement is controlled by a pair of springs that work together to create a couple. The springs are mounted diagonally from each other, so when one end of the car hits a bump, the shock waves are transferred to the opposite end through the couple, which helps to prevent the car from bouncing too much.