A car of mass `m` moving over a convex bridge of radius `r` .Find the normal reaction acting on car when it is at bighest point the bridge.

A car of mass m moving over a concave bridge of radius r .Find the normal reaction acting on car when it is at lowest point the bridge

A car of mass m moving over a concave bridge of radius r .Find the normal reaction acting on car when it is at lowest point the bridge

A car of mass kg rounds a curve of radius 250 m at 90 km/h. Find the centripetal force acting on it .

A motor car of m travels with a uniform speed v on a convex bridge of radius r . When the car is at the middle point of the bridge, then the force exterted by the car on the bridge is

I here is a parabolic shaped bridge across the river of width 10 meter.The highest point of the bridge is 4 meter above the level of bank.A car of mass 72kg is crossing the bridge at a constant speed of 5m/s . Find the force (in Newton) exerted on the bridge by car when it is at the highest point P of the bridge. (take g=10m/s^(2))