a bicycle wheel is spun up to an angular velocity of 13.1 rad/s, then the tire is pressed against the ground until the wheel stops rotating. assume that the bicycle's horizontal and vertical positions remain fixed. knowing that the kinetic friction coefficient is 0.2 and the wheel rotated 3 complete revolutions before stopping, determine the average vertical force in (n) used to press the tire onto the ground. (assume the vertical force is a combination of the wheel's weight and the person's holding force) the wheel can be modeled as a 1.4 kg ring with radius 0.3 m.
