force

An amusement park ride consists of a large vertical cylinder that spins about its axis fast enough that a person inside is stuck to the
wall and does not slide down when the ?oor drops away. given g = 9.8 m/s2, the coe?cient µ =0.321 of static friction between a person and the wall, and the radius of the cylinder R =3.6 m. For simplicity, neglect the person’s depth and assume he or she is just a physical point on the wall. The person’s speed is
v =2?R/T where T is the rotation period of the cylinder (the time to complete a full circle). Find the maximum rotation period T of the cylinder which would prevent a 48 kg person from falling down.
Answer in units of s