Question

write about the Vehicle at the Top of a Convex Over- Bridge​

Answer 1

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vehicle at the top of a convex over bridge, during its motion (part of vertical circular motion). Forces acting on the vehicle are (a) Weight mg and (b) Normal reaction force N, both along the vertical line (top most position). The resultant of these two must provide the necessary centripetal force (vertically downwards) if the vehicle is at the uppermost position. Thus, if v is the speed at the uppermost point