In an Amusement Park Ride,passengers Stand Inside an 8 M

Multiple Choice

In an amusement park ride,passengers stand inside an 8 m radius cylinder.Initially,the cylinder rotates with its axis oriented along the vertical.After the cylinder has acquired sufficient speed,it tilts into a vertical plane,that is,the axis tilts into the horizontal,as shown in the figure.Suppose that,once the axis has tilted into the horizontal,the ring rotates once every 4.5 s.If a rider's mass is 40 kg,with how much force does the ring push on her at the top of the ride?

A) 230 N
B) 620 N
C) 1000 N
D) 390 N