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A flyover bridge is in the form of a circular arc of radius 39.5m. What is the limiting speed at which a car can cross the bridge without loosing contact with the road, at the highest point ? (Assume that centre of gravity of the car is 0.5 m above the road and g = 10 m/s^2 ). |
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Answer» SOLUTION :Since the centre of gravity of the car is 0.5 m above the ROAD, the effictive RADIUS 39.5 + 0.5 =40 m `THEREFORE` For equilibrium (mv^2)/r=mg thereforev^2=rg `V=SQRT(rg)=sqrt(40xx10)=20` m/s. |
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