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 rotational 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