[SOLVED] Bicycle problem Will the bicycle move forward or backward? We have 2 forces. The friction and the one we act on the wheel through the string. The weight and the normal force have torque equal to zero. torque of the friction = T.r1 torque of the F = F.r2 In the second picture r1>r2, so the wheel will move backward, since in order for the wheel to move F=static friction How am I doing so far? Am I in the right path, please?