A uniform disk of mass M = 5.6 kg has a radius of 0.14 m and is pivoted so that it rotates freely about its axis. A string wrapped around the disk is pulled with a force F equal to 23 N.
(a) What is the torque being exerted by this force about the rotation axis?
______N · m
(b) What is the angular acceleration of the disk?
______rad/s2
(c) If the disk starts from rest, what is its angular speed after 4.7 s?
______rad/s
(d) What is its kinetic energy after the 4.7 s?
______J
(e) What is the angular displacement of the disk during the 4.7 s?
______rad