A Uniform Rod of Length (L = 2

Multiple Choice

A uniform rod of length (L = 2.0 m) and mass (M = 1.5 kg) is pivoted about a horizontal frictionless pin through one end. The rod is released from rest at an angle of 30° below the horizontal. What is the angular speed of the rod when it passes through the vertical position? (The moment of inertia of the rod about the pin is 2.0 kg⋅m².)

A) 3.5 rad/s
B) 2.7 rad/s
C) 3.1 rad/s
D) 2.3 rad/s
E) 1.6 rad/s