A roller-coaster car enters the top of a vertical loop of radius

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

10\,\text{m}

. What is the minimum speed the car must have at that point to avoid losing contact with the track? Take

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

. (a)

7.0\,\text{m/s}

(b)

2.2\times10^{1}\,\text{m/s}

(c)

1.0\times10^{1}\,\text{m/s}

(d)

1.4\times10^{1}\,\text{m/s}