Which of the following is the approximate curve resistance (in N) of a 1,200 kilogram (kg) automobile that is traveling at 70 kilometers per hour (km/hr) around a curve with a radius of 300 meters (m)?
Explanation
Answer: B - The approximate curve resistance of a 1,200 kg automobile that is traveling at 70 km/hr around a 300 m radius curve is approximately 756 N.
Solution: Use the Curve Resistance formula
Rc = 0.5 * [(1,000/3,600 * v)] 2*m / R
Where v = vehicle speed (km/hr)
m = gross vehicle mass (kg)
R = radius of curvature (m)
Rc = 0.5 * [(1,000/3,600 * 70)] 2*1,200 / 300
= 756 N
