Consider a car moving on a horizontal road, convex bridge and concave bridge of same radius $R$ . The speed of the car in each situation is same and equal to $v$ , the mass of the car is $m$ , then:
$(i) N_{A} = m g$
$(i i) N_{B} = m g - \frac{m v^{2}}{R}$
$(i i i) N_{C} = m g + \frac{m v^{2}}{R}$
$(i v) N_{C} > N_{A} > N_{B}$

i, i i

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i i, i i i

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i, i i, i i i

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The correct option is D All options are correct

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Consider a car moving on a horizontal road, convex bridge and concave bridge of same radius R. The speed of the car in each situation is same and equal to v, the mass of the car is m, then:(i)NA=mg(ii)NB=mg−mv2R(iii)NC=mg+mv2R(iv)NC>NA>NB

The correct option is D All options are correct