Part of riding a bicycle involves leaning at the correct angle when making a turn, as seen in Figure 6.36. To be stable, the force exerted by the ground must be on a line going through the center of gravity. The force on the bicycle wheel can be resolved into two perpendicular components—friction parallel to the road (this must supply the centripetal force), and the vertical normal force (which must equal the system’s weight). (a) Show that (as defined in the figure) is related to the speed and radius of curvature of the turn in the same way as for an ideally banked roadway—that is, (b) Calculate for a 12.0 m/s turn of radius 30.0 m (as in a race).
Part of riding a bicycle involves leaning at the correct angle when making a turn, as seen in Figure 6.36. To be stable, the force exerted by the ground must be on a line going through the center of gravity. The force on the bicycle wheel can be resolved into two perpendicular components—friction parallel to the road (this must supply the centripetal force), and the vertical normal force (which must equal the system’s weight). (a) Show that (as defined in the figure) is related to the speed and radius of curvature of the turn in the same way as for an ideally banked roadway—that is, (b) Calculate for a 12.0 m/s turn of radius 30.0 m (as in a race).
Part of riding a bicycle involves leaning at the correct angle when making a turn, as seen in Figure 6.36. To be stable, the force exerted by the ground must be on a line going through the center of gravity. The force on the bicycle wheel can be resolved into two perpendicular components—friction parallel to the road (this must supply the centripetal force), and the vertical normal force (which must equal the system’s weight). (a) Show that (as defined in the figure) is related to the speed and radius of curvature of the turn in the same way as for an ideally banked roadway—that is, (b) Calculate for a 12.0 m/s turn of radius 30.0 m (as in a race).
Part of riding a bicycle involves leaning at the correct angle when making a turn, as seen in Figure 6.36. To be stable, the force exerted by the ground must be on a line going through the center of gravity. The force on the bicycle wheel can be resolved into two perpendicular components—friction parallel to the road (this must supply the centripetal force), and the vertical normal force (which must equal the system’s weight). (a) Show that (as defined in the figure) is related to the speed and radius of curvature of the turn in the same way as for an ideally banked roadway—that is, (b) Calculate for a 12.0 m/s turn of radius 30.0 m (as in a race).
Definition Definition Force on a body along the radial direction. Centripetal force is responsible for the circular motion of a body. The magnitude of centripetal force is given by F C = m v 2 r m = mass of the body in the circular motion v = tangential velocity of the body r = radius of the circular path
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