The Rigid Body Shown Is Rotated About an Axis Perpendicular

Multiple Choice

The rigid body shown is rotated about an axis perpendicular to the paper and through the point P.If M = 0.40 kg,a = 30 cm,and b = 50 cm,how much work is required to take the body from rest to an angular speed of 5.0 rad/s? Neglect the mass of the connecting rods and treat the masses as particles.

A) 2.9 J
B) 2.6 J
C) 3.1 J
D) 3.4 J
E) 1.6 J