Wheel axle on a bicycleThe pedal and the disc gear on the middle shaft comprise a labor-saving wheel axle (the radius of the pedal is larger than the radius of the disc gear). How do I feel wrong?. There is a shaft in the middle of the disc gear. It should be. The middle axle is the shaft of the axle. The disk is the wheel, isn't it?The principle of the pedals and the disc gear on the center shaft is different from that of the screwdriver, screw and nut of the cross sleeve
The pedals and disc gears on the middle axle of the bicycle are wheels and axles, and there is no doubt about it!There is a shaft in the middle of the disc gear. It should be. The middle axle is the shaft of the axle. The disk is the wheel, isn't it? - errorThe axle in the middle of the disc gear is the center of the pedal and the rotation of the disc. Which shaft is exerting the force on it?The wheel and the shaft are relative!The principle of the pedals and the disc gear on the center shaft is different from that of the screwdriver, screw and nut of the cross sleeve - the sameDoes not the middle of them have a shaft as well? That is, around the center of rotation?!
In fact, you guess is correct, the axis of the pedal and disc gear principle, and screw screwdriver screw, and the cross sleeve screw nut is the same
In fact, the lever principle, labor-saving, because the increase of the axis of the moment.
