Physics

Problem

A car of mass

1000\,\text{kg}

is crossing a convex bridge which has a radius of curvature of

40\,\text{m}

. At the highest point of the bridge, the car has a speed of

36\,\text{km/h}

. Calculate the normal reaction force exerted by the bridge on the car at this instant. Take

g = 10\,\text{m/s}^{2}