How fast does a motorcyclist have to move on a convex bridge in order to slip through a hole in its middle?
| December 9, 2020 | education
How fast does a motorcyclist have to move on a convex bridge in order to slip through a hole in its middle? The radius of curvature of the bridge is 90 m.
Decision:
The rider’s axle pressure (weight) is zero when the forces are equal. mv2 = mg => R v2 = gR => U = √gR = √10 m * 40 m = 20 m / s c2
Answer: 20 m / s
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