HELP!!!A dynamics problem 1. The problem statement, all variables and given/known data In a carnival ride called the Rotor, people stand against the inside wall of cylindrical chamber. when the chamber rotates with a sufficiently high angular velocity, the floor of the chamber is lowered and the people "stick" to the wall. the coefficient of static friction between a person and the wall is mu(s)=0.5 and the radius of the chamber is r=3.5m. what is the minimum angular velocity, omega, of the chamber (in revolutions per minute) that will keep the people from sliding down the wall? 3. The attempt at a solution a=(omega)^2*radius two unknown variables therefore, we need to find the acceleration Frictional force=mu(s)*m*g mu(s)=0.5 g=9.8 frictional force=0.5*m*9.8 and frictional force=ma mu(s)*m*g=ma a=mu(s)*g sub the a I got into a=(omega)^2*radius to find omega however, while i was trying to find the frictional force, there are two unknown variables, which are frictional force and the mass. I think that i can solve this question as soon as I know the mass for the person...can anyone teach me how to find the mass of the person? Thank you for helping me.