A 200 M-Long 6

Multiple Choice

A 2.00 m-long 6.00 kg ladder pivoted at the top hangs down from a platform at the circus.A 42.0 kg trapeze artist climbs to a point where her center of mass is at the center of the ladder and swings at the system's natural frequency.The angular frequency (in s ^{- 1}) of the system of ladder and woman is

A) 1.01.
B) 3.07.
C) 4.03.
D) 8.05.
E) 16.2.