A horizontal curve on a rural road is banked at an angle of and has a radius of

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A horizontal curve on a rural road is banked at an angle of

15^{\circ}

and has a radius of

120\,\text{m}

. Determine the speed (in

\text{m}\!/\!\text{s}

) at which a vehicle can negotiate the curve without any assistance from friction.