Identify the incorrect statement.

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Question

(B) For a convex bridge,the net centripetal force is provided by the difference between the weight and the normal reaction: $Mg - N = \frac{mv^2}{R}$.

Vedclass · Accepted Answer

$A$ car moving over a convex bridge is heavier than the same car resting on the same bridge.

Vedclass · Answer

(B) For a convex bridge,the net centripetal force is provided by the difference between the weight and the normal reaction: $Mg - N = \frac{mv^2}{R}$.Thus,$N = Mg - \frac{mv^2}{R}$,which implies $N For a concave bridge,the net centripetal force is provided by the difference between the normal reaction and the weight: $N - Mg = \frac{mv^2}{R}$.Thus,$N = Mg + \frac{mv^2}{R}$,which implies $N > Mg$. The car feels heavier.Therefore,statement $B$ is incorrect because the car is lighter,not heavier,on a convex bridge.

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