A Conical Pendulum Is Constructed by Attaching a Mass to a String

Multiple Choice

A conical pendulum is constructed by attaching a mass to a string 2.00 m in length. The mass is set in motion in a horizontal circular path about the vertical axis. If the angle the string makes with the vertical axis is 45.0 degrees, then the angular speed of the conical pendulum is

A) 4.00 rad/s.
B) 3.55 rad/s.
C) 3.04 rad/s.
D) 2.63 rad/s.
E) 2.01 rad/s.