A Roller Coaster, Loaded with Passengers, Has a Mass of 3000

Multiple Choice

A roller coaster, loaded with passengers, has a mass of 3000 kg; the radius of curvature of the track at the bottom point of the dip is 24 m. If the vehicle has a speed of 18 m/s at this point, what force is exerted on the vehicle by the track? (g = 9.8 m/s²)

A) 2.3 * 10⁴ N
B) 4.7 * 10⁴ N
C) 7.0 * 10⁴ N
D) 1.0 * 10⁴ N