A car of mass travels over the top of a circular hump of radius at a speed of

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

A car of mass

1200\,\text{kg}

travels over the top of a circular hump of radius

40\,\text{m}

at a speed of

54\,\text{km}\,\text{h}^{-1}

. Take

g = 9.8\,\text{m}\,\text{s}^{-2}

. What is the approximate normal reaction between the road surface and the car at the highest point of the hump? (a)

18.5\ \text{kN}

(b)

0\ \text{N}

(c)

5.0\ \text{kN}

(d)

8.4\ \text{kN}