所以综合,物体受的所有力,车轮不会受到净力,但是有一个,净作用力,那就是我要推进的。
And so the net, the sum of all forces on that object there is no net force on that wheel but there is a net torque, and that's why it's going to precess.
所以综合,物体受的所有力,车轮不会受到净力,但是有一个,净作用力,那就是我要推进的。
And so the net, the sum of all forces on that object there is no net force on that wheel but there is a net torque, and that's why it's going to precess.
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