V will come because of this force. So, you know you can see that way, it is only
equivalent, but it is like mass into acceleration force. But, you have to give force to get
acceleration. So, this is the acceleration part. So, first you give F r, that is why there is a
v setup, that is why this comes and this part actually is only in the steady turning time.
So, we do not think of a steady time, then we do not know what force, when dot and all
coming. You can think there is a force coming here, but take that point to be the point of
action and take moment about that so that, that action force does not contribute.