Physics

Problem

A residential street includes a frictionless banked turn of radius

120\,\text{m}

. For what banking angle should the turn be engineered so that drivers traveling at

25\,\text{m}\!\cdot\!\text{s}^{-1}

can negotiate the curve without relying on tire friction? a)

32^{\circ}

62^{\circ}

28^{\circ}

15^{\circ}