A uniform thin rod of length 1.0m and mass 2.0kg is pivoted about one end and is free to rotate in a vertical plane. Ignoring gravity, a 25N force is applied perpendicular to the rod at its free end. What is the resulting angular acceleration of the rod?
a) 19rad/s2
b) 38rad/s2
c) 13rad/s2
d) 150rad/s2