A small 3.5 kg mass is tied to the end of a 0.48 m string and made to swing in a conical pendulum at an angle of 26 to the vertical. Calculate: a) the radius of the circular path taken; b) the period of the pendulum mass; 0) the tension in the string. In the previous problem, the string can only handle a maximum tension of 50. N. What minimum period will just keep the string from breaking? A 1.0 x 105 kg train rounds a level curve of radius 200. m at 20.0 m/s. a) Determine the centripetal force on the train provided by friction. b) What slope would need to be provided on the curved portion of the track so that the weight of the train supplies the centripetal force needed to make the turn successfully, without friction